1 2 3 - Torqeedo

Travel
Base Travel
Foldable outboard with integrated lithium-manganese
rechargeable battery – ultra lightweight, ultra mobile
and ultra strong
Highly efficient drive from our Travel line with fixed
shaft and connection cables for lead batteries. Highly
flexible in use because the battery connections for lead
and lithium are compatible from both lines.
Cruise
Power
The strongest 24 V outboard on the market
– with the thrust of a 6 HP combustion engine
High-performance lithium-manganese rechargeable
batteries – extremely high energy density, unsurpassed
high current performance, safe, and maintenance-free
Cover photo:
Torqeedo Propeller in operation within a low-pressure chamber.
The underpressure reveals the cavitations that reduce the efficiency of the propeller. The small level of loss in efficiency of the
Torqeedo Propeller can be seen by the small lines. Details on the propeller, on hydrodynamics as well as pictures of comparable
competitive products are provided on Page 16
Catalogue 2007

Contents
Contents
The Torqeedo Concept 4
Torqeedo Technologies
• Propulsive power and overall efficiency 6
• Battery technology 8
• Cables, switches, fuses 10
• Motor and power electronics 12
• Propeller technology and hydrodynamics 16
Torqeedo Travel 18
Torqeedo BaseTravel 22
Torqeedo Cruise 26
Torqeedo Power
0
Company and Contact
4
Catalogue 2007

The Torqeedo Concept
Highest performance using the most recent
technologies
Highest overall efficiency on the market – Torqeedo motors
convert the existing battery capacity up to twice as efficient into
propulsion as conventional outboards.
Most advanced rechargeable battery systems – Torqeedo uses
lithium-manganese high-performance batteries - the safest of
all lithium-based battery systems. These possess an extremely
high energy density, deliver high current, and are safe and
maintenance-free
Efficiency turned into power – Torqeedo sets new standards in
terms of power and efficiency with the latest generation of
highly-efficient, electronically commutated torque motors.
Superior propeller technology – The characteristic Variable-Pitch-
Variable-Camber (VPVC) propeller has been specially calculated
for the high-performance torque of Torqeedo Torque motors
using methods of commercial navigation. It translates the power
of the motors into propulsive power at the highest level of
efficiency.
Catalogue 2007

The Torqeedo Concept
Protects the natural environment
Highest level of convenience
Simple maneuvering – Torqeedo motors do not need idling
speed and are extremely propulsive even at low rotational
speeds. This enables powerful maneuverability with centimeter
precision.
Simple charging – Torqeedo batteries can easily be
charged using any socket
No pollution of the water – Torqeedo motors do not contaminate
waters with petrol or diesel oil.
Clean – electric motors do not produce greenhouse gasses or any
form of pollutants such as carbon dioxide and nitrogen oxide.
Low noise emission – while using a Torqeedo motor, you hear
the wind and the waves.
High level of safety – The Torqeedo motor program works
in the safe low-voltage range up to 42 V. For this reason
there is no danger of explosions or electrical shocks.
No maintenance – Torqeedo motor are constructed in such
a way that they require no maintenance.
Catalogue 2007

Propulsive power and
overall efficiency
Meaningful performance indicators
Torqeedo provides meaningful performance indicators for boat
drives. Basically, the power of a drive is measured according to
how much propulsion it actually delivers for moving the boat.
This power is referred to as the output or propulsive power. It is
calculated by the power times the speed and can be expressed in
watts or horsepower.
Although the propulsive power forms an extremely informative
index for boat drives, most manufacturers don’t provide it.
Suppliers of electric motors generally use the input power of
their motors as the power rating. However, only a fraction of
this value is actually available to the boat drive as propulsive
power. The rest is lost – for example in the motor or propeller – as
inefficiency. Manufacturers of combustion engines, on the other
hand, usually give the power at the motor shaft as their index.
Also here, only a fraction of this value is available as propulsive
power:
Overall efficiency in percent
Overall efficiencies of various motor manufacturers
50
45
40
35
30
25
20
15
10
5
0
0
Torqeedo
Travel 401
Competitor:
500 W, 12 V
Competitor:
300 W, 12 V
Torqeedo
Travel 801
Competitor:
1,000 W, 24 V
Torqeedo
Cruise 2.0
Competitor:
2,200 W, 36 V
500 1000 1500 2000 2500
Input power in watts
Drive system and overall efficiency
Drive train
components
Type of energy
DC DC AC Rotation Rotation Propulsion
Power
Current times
voltage
Taken from the
battery
Current times
voltage
Taken from cable
Temporal division
of current
times voltage
Torque at the motor
shaft times the
angular velocity
of the motor shaft
Torque at the
propeller shaft
times the angular
velocity of the
propeller shaft
Power (thrust)
at the boat times
the speed of the
boat
INPUT
POWER
SHAFT
POWER
PROPULSIVE
POWER
Traditional power
specs of electric
motors
(all system losses
not considered)
Traditional power
specs of
combustion
engines (high
efficiency losses at
the propeller not
considered)
Power specs of
Torqeedo
Together with the
input power results
in the overall efficiency
(propulsive
power divided by
the input power)
Catalogue 2007

Propulsive power and overall efficiency
Propellers on combustion engines of a lower power class cause
some 70% of the motor shaft power to be lost as inefficiency that
cannot be converted to propulsion.
The second important index is the overall efficiency. It describes
the efficiency with which the drive system converts the available
energy sources into output power and is calculated by dividing
the propulsive power by the input power.
Torqeedo builds the most efficient outboards on the market by
far, by means of consistent orientation towards propulsive power
and overall efficiency. As the overall efficiency of a drive system
is given by the product of the partial efficiency levels of all
components, a single poor partial-efficiency level can have a
significant negative influence on overall efficiency. For this
reason, Torqeedo takes great care in the comprehensive
optimization and interaction of all components.
Another commonly used motor index is the static thrust
expressed in kilogram force (kf) or Newton (N). In comparison
to the propulsive power and overall efficiency, this index is less
meaningful, as it only measures propulsion in association with
the static bollard pull experiment. In this case, as the speed is
zero, the effective power (power times speed) is also zero. As a
consequence to this, the static thrust does not provide any
information on the propulsive power that can be actually
achieved and is therefore not a meaningful index when taken in
isolation. It merely serves as an indication for the maximum boat
size that the motor can be used on. Before purchasing a motor, it
is recommendable to test the static thrust specifications
personally. In Torqeedo’s tests of competitor products, the manufacturers’
specified static thrust values could generally not be
reproduced.
Manufacturers‘ specifications and test results of electric boat motors
Product
Maximum
input power
in operation
(electric
motors) in
watts
Maximum
motor shaft
power
(combustion
engines) in
watts
Maximum
propulsive
power in
watts
Maximum
overall
efficiency
of electric
motors in
percent
Maximum
propeller
efficiency of
combustion
engines in
percent
Static
thrust in
kilogram
force
Torqeedo Travel 401 400 175 44 % 18
Torqeedo Travel 801 800 350 44 % 31
Torqeedo Cruise 2.0 2.000 900 45 % 55
Competitor 300 W & 12 V 300 60 20 % 9
Comments
Competitor 500 W & 12 V 500 100 20 % 16 Manufacturer’s specification of static thrust : 25 kf
Competitor 1,000 W & 24 V 1,000 190 19 % 25 Manufacturer’s specification of static thrust : 80 kf
Competitor 2,200 W & 36 V 1,800 600 33 % 40
Competitor 2.3 HP / 4-stroke 1,690 380 22 % 25
Competitor 4 HP / 2-stroke 2,940 700 24 % 32
Competitor 6 HP / 4-stroke 4,410 1,200 27 % 51
A big test for small motors: Accredited test laboratory Potsdam Model
Basin (SVA Potsdam) confirms unique efficiency of Torqeedo outboards.
After successful internal tests and a successful introduction of the
motors onto the market in Germany, Austria and Switzerland, Torqeedo
wanted to have an “ultimate” test and sent two of its outboards to the
SVA Potsdam. The independent experts at the SVA tested and confirmed
the unique overall efficiency level and superior propulsive powers of the
Torqeedo motors under laboratory conditions.
Since its founding more than 50 years ago, the SVA has developed
into an internationally recognized research and consultation facility for
commercial shipbuilding. 45 highly-specialized experts from various
fields as well as test systems and measurement techniques that meet all
international standards consolidate the position of this non-profitmaking
organization as an internationally recognized research center
and accredited test laboratory.
Catalogue 2007

Battery technology
High-performance and safety: Torqeedo LIMA cells
Lithium-based battery systems are by far the most powerful
energy carriers currently available. On the one hand they are
characterized by a high specific energy density. This means that
they are able to store a large amount of energy per kilogram of
battery weight. In addition, lithium batteries can withstand high
current: in other words, they are able to deliver their capacity
even under high loads. Both of these characteristics are of great
importance for applications in boat drives: on the one hand, the
battery weight and volume on board is reduced. On the other
hand, the lithium-based battery systems ensure that the power
supply does not collapse even when the boat‘s electro-motors
temporarily draw high currents from the batteries.
A 300 Wh LIMA high-performance battery is integrated into
the Torqeedo Travel models
An additional advantage: lithium batteries do not display a
memory effect and are cyclically stable. Even when stored for
many months, almost no charge is lost, in contrast to
conventional lead batteries.
Torqeedo batteries are also extremely robust and are secured
against incorrect handling. In addition, they are protected against
short-circuiting, overvoltage and excessive discharge.
Torqeedo Power – Torqeedo provides LIMA high-power
batteries as the energy source for BaseTravel and Cruise
models as well as for other electrical drives and power
supply systems.
The high energy density of lithium cells demands effective safety
technology. For this reason, Torqeedo uses exclusively lithiummanganese
safety cells. These so-called LIMA cells offer the
highest safety standard of all lithium-based batteries: Only LIMA
cells are able to master the necessary safety tests even when the
safety electronics are switched off. These safety tests include in
particular:
• Crash tests: a fully-charged battery is crushed with a ten-ton
hydraulic press
• Nail tests: a nail is hammered right through the case of a
charged battery until it comes out of the other side. This leads
to the maximum possible number of battery cells being
short-circuited.
• Overcharge tests: the battery packs are overcharged with 42 V
at 7.5 A until the cells are destroyed.
• Short-circuit tests: the main contacts are short-circuited
without the safety circuit.
• High-temperature tests: the aforementioned tests are
undertaken on a 150° C pre-heated battery.
Alternative lithium battery concepts in round cell format or in
lithium polymer packs (“Li poly”) do not fulfill these criteria
due to the chemical composition of the battery (cobalt or nickel
cathode). Additionally, in case of a fault such as, e.g. shortcircuit,
overload, mechanical damage, lithium polymer packs
react in a highly critical manner due to the missing safety
mechanisms immanent within the cells.
More information on Torqeedo battery technology is contained in
the chapter on Torqeedo Power from page 30 onwards.
Catalogue 2007

Battery technology
Background knowledge on battery capacity:
The stored energy quantity – in other words, the capacity of a battery – is measured in watt-hours (Wh). For historical reasons,
the battery capacity is sometimes indicated by the nominal voltage in volts (V) and the stored charge in ampere-hours (Ah).
In this case, the stored energy is calculated as voltage times charge.
Energy density and high-current characteristics of various battery designs
Energy density (specific capacity in Wh/kg)
180
160
140
120
100
Lithium cobalt
(fails in safety tests)
The more power that is drawn from the
battery, the more its capacity is diminished;
this applies to all types of battery.
Lithium batteries with much higher energy
density than conventional batteries,
especially when faced with typical power
requirements of boat drives.
LIMA cells with the best high-current characteristics
and a higher level of safety than
lithium cobalt.
Lithium-manganese
80
1 2
60
40
High-end NiMH
Low-cost NiCd
3
20
High-end lead-gel
Low-cost lead-acid
0 100
200 300 400 500 600 700 800 900
High-current characteristics (specific power in W/kg)
1000
1 Rated capacities: 2 The typical working range 3 Working range of light-weight
Lithium with 3-4 times
the energy density of
standard lead batteries
of boat drives:
Lithium with 6-8 times the
energy density of lead batteries
high-power applications such as
Torqeedo Travel 801:
LIMA cells leave all competitors behind.
Catalogue 2007

Cables, switches, fuses
Torqeedo cable connections and cable sets
Torqeedo master switches, fuses and connectors
Torqeedo cable connections and sets must be able to handle
peak currents of over 80 amps. For example, the Cruise 2.0
model with an input power of 2,000 W and a voltage of 24 V has
a current flow of some 83 amps. For this reason, Torqeedo uses
cables with 35 mm 2 cross-sectional area for cable connections
and cable sets. With a cable run of 5 meters between motor and
battery, this results in a loss of approximately 17 W. In case of
the Torqeedo Cruise, this corresponds to a loss of 0.8 percent
of the overall performance and 3.4 W per meter of cable. This
minimizing of the power loss ensures a high degree of motor
efficiency and offers the additional benefit of safety, as high loss
increases the danger of local overheating.
In order to be able to quickly interrupt the power circuits in the
event of technical problems, electrical installations on boats
should be equipped with a master switch. The only genuine
source of danger in a power circuit under 42 volts is defective
contacts. These can cause local overheating and thereby lead to
the risk of fire. Possible short-circuit currents are also a danger in
relation to this, as they can irreversibly damage the battery. For
this reason, when assembling an electrical motor it is not
recommended that you use soldering irons and pole tip pliers.
A better alternative is the use of pre-assembled cable sets, which
should include additional short-circuit protection as well as a
master switch.
Cable power loss in watts depending
on diameter and length
For Torqeedo Cruise 2.0, 24 V, 2,000 W
Torqeedo draws on a meticulous selection of materials and
uncompromising quality for all of its cable connections, switches,
connectors and fuses. This means that minimum loss and a high
standard of safety are guaranteed.
Cable length in m
Cross sectional area in mm 2
50 35 25 16 10 6 4 2
1 2.3 3.3 4.7 7.3 11.7 19.5 29.3 58.6
3 7.0 10.0 14.1 22.0 35.1 58.6 87.8 175.7
5 11.7 16.7 23.4 36.6 58.6 97.6 146.4 292.8
7 16.4 23.4 32.8 51.2 82.0 136,6 204.9 409.9
10 23.4 33.5 46.8 73.2 117.1 195,2 292.8 585.6
Cable loss < 2.5 % Cable loss > 2.5 %
Torqeedo offers pre-assembled cable sets with master switch,
fuse and jumper cable for series connection of two 12 V batteries
for the Cruise series models. The cable sets are completely
pre-assembled and are equipped with high-current connectors
for convenient installation.
Due to their low power requirements, the models from the Base-
Travel series only require simple cable connections; these are
included together with the main switch and the fuses within the
standard scope of delivery.
In all cases, a Torqeedo motor can be safely installed within
just a few minutes using the appropriate cable set and a simple
wrench.
On-off-switch
10 Catalogue 2007

Cables, switches, fuses
Torqeedo connection cable with 35mm 2 cross sectional area.
Background knowledge: Ohm’s law and cable power dissipation
According to Ohm’s law, the power dissipation of a cable is proportional to its electrical resistance and is related to the square
of the electricity flowing through it. More simply expressed: double the current leads to a quadrupling of loss, and ten times the
current leads to one hundred times the loss.
For safety reasons, boats operate in the low-voltage range. That is why even in electrical drives between 2,000 and 3,000 watts
input power, the peak current flow amounts to 80 to 100 amperes.
In comparison: A 1,100 watt electric drill draws 5 amps from a 220 V socket. If you were to operate an electrical drive using
standard household cable then there would be a power loss of approx. 15% caused simply by the cable resistance. In order to
keep losses at a minimum and to avoid the danger of local overheating, manufacturers have to reduce the cable resistance to a
minimum. In order to do so, there are two approaches: the distance between the battery and the motor can be minimized, and a
large diameter cable can be selected.
Catalogue 2007
11

Motor and
power electronics
Strong core: Torqeedo torque motors
The motor is the core of a boat drive. With its torque motors,
Torqeedo sets new standards in the areas of torque, efficiency
and power per weight and volume. The motor which equips the
Travel 801 with the effective power of a 2 HP combustion engine
only weighs 500 g and is no larger than a packet of cigarettes.
In the case of a torque motor, the objective of the design is to use
as many factors as possible to maximize the torque. Torqeedo
has uncompromisingly optimized the torque motor and, with the
introduction of synchronous motors, which come as permanent
excited magnet, electronically commutated and designed as
external rotor motors, has created true torque giants.
This motor equips the Travel 801 model with the effective
power of a 2 HP combustion engine – with a considerably
higher thrust. The motor has a stator diameter of 43 mm
and weighs 500 g. As a comparison: an equivalent-type
motor the size of a matchbox and the weight of a letter
(22 g) would suffice as the drive of a bicycle (70 W peak
power).
However, that is not all: The use of high-tech materials further
improves the performance parameters of the Torqeedo torque
motors: a Torqeedo motor, such as that used in the Travel 801
model, uses rare earth magnets instead of hexaferrites.
Altogether, it exceeds a conventional internal rotor motor by 24-
fold torque – although it is the same size. Combined with a 1:14
step-down gear, the 800-watt motor can easily drive a propeller
typically used by a 20 HP combustion engine.
The Torqeedo motors also take on a new dimension with regard
to efficiency. They experience no excitation current and brush
losses: and are equipped with additional, patented control
mechanisms, reducing losses to a minimum. The efficiency not
only ensures the efficient use of the available battery capacity
– it also prevents thermal problems. In this way, Torqeedo can
combine high performance with a small structural shape.
12 Catalogue 2007

Motor and power electronics
Background information on electric motors
There are four criteria for differentiating among electric motors: the frequency response, the generation of the alternating field
(commutation), the excitation of the magnetic field, and the structural shape.
Depending on the frequency response, we speak of:
Induction motors: the ratio between the engine speed and the frequency of the supply voltage is not constant: it depends on
the loading condition of the machine. The higher the load, the higher the speed difference – the so-called “slip”, i.e. a specified
propeller speed is not maintained at higher flow resistances. Hence, thrust is not available at the very time it is required.
Synchronous motors: with this type of motor, the ratio between the supply voltage frequency and the engine speed is constant.
As a rule, synchronous engines are torque controlled. This means that they always draw as much power as they need in order
to provide the necessary torque at the desired speed. For this reason, they are the preferred motor in areas with particularly
demanding torque requirements. Should the motor require more power in order to maintain a specified propeller speed, the
motor automatically draws more power.
Depending on the type of the generation of the alternating field (commutation), we divide electric motors into:
Mechanically-commutated motors: The brush-complemented motors generate the alternating field necessary for the motor to
operate by means of sliding contacts. Based on their geometric organization, these “brushes” convert the power depending on
the rotor position. A shortcoming in these motors is the wear-and-tear of the brushes, hence making the motors maintenanceintensive.
The contact resistance also causes so-called brush losses, impairing the degree of effectiveness of the motor.
Electronically-commutated motors: they generate the alternating field necessary for the motor to operate by means of an electronic
circuit – the “frequency converter”. This prevents the occurrence of brush losses, and the motors are maintenance-free.
The enormous progress that has been made in the area of electronic power components and circuit design has only made it
possible in recent times for high-power motors to be manufactured at a marketable price.
Depending on the type of generation of the magnetic field, electric motors are divided into
Electromagnetic-excited motors: this type provides the necessary magnetic field by means of a second loading section. This
makes this option more economical: however, it is considerably bulkier and heavier than the permanent magnet-excited motor.
Further, it is also considerably less advantageous with regard to power consumption and degree of effectiveness.
Permanent magnet-excited motors: in this case, the permanent magnets generate the necessary magnetic field. Hence, there are
no performance losses in the field coils.
Depending on the structural shape, we speak of:
Internal rotor motor: in this classical model of electrical motor, the rotor is surrounded by the stator. The rotor is a revolving motor
component attached to the motor shaft: it is also known as a “rotor motor” or “armature”. Since the coils of the internal rotor
motor are located on the outside, the motor has advantages when it comes to cooling. Compared to other structural shapes,
however, it is relatively low-torque.
Disc armature motor: it generates the torque (= force times lever) by arranging the axle of the magnetic field parallel to the shaft
instead of radial to the shaft. This enables the realization of geometries in which the location of the electromagnetic generation
of power is a good distance from the axle. Hence, a higher torque is achieved at the same power. The disc armature geometry is
disadvantageous to outboard motors with direct water cooling. Due to its extremely large diameter, it isn’t possible to build disc
armature motors directly into a pylon.
External rotor motor: this is the most modern type of motor: the coils are arranged inside. The rotating magnets are located on
an externally-running bell. With the same structural shape, external rotor motors hence have a significantly higher torque than
internal rotor motors.
Catalogue 2007
13

Compact power – the Travel 801 motor
Power electronics for the Travel range
Clever brain – the new digital Torqeedo power electronics
The electronic commutation of electric motors described above
can generally be either analog or digital. While most providers
of electric motors continue to work mechanically using carbon
brushes for commutation, Torqeedo has gone two steps further
and uses digital power electronics in its new motor models. In
contrast to analog-based electronic commutation, digital
electronics has a more intelligent power control and handling.
This provides more power, more stability and more comfort.
The intelligence of the power control is in its combination of
propeller-speed control and control of the power intake. The
propeller-speed control regulates the rpm of the propeller, i.e.
the motor keeps tightly within the speed specifications and draws
whatever power it requires to reach the defined propeller-speed.
If, on the other hand, the power consumption is controlled then
the drive processes the power made available to it as good as it
can and the resultant force is then the speed of the propeller.
What is the concrete significance of intelligently combining these
types of control logic For example, the Torqeedo electronics
functions speed-controlled within low power ranges in order to
allow slow maneuvering that is absolutely precise to within a
centimeter. In other cases, the electronics controls the motor via
the power intake: e.g. to provide a very light boat with a higher
final speed or to provide the driver with a defined power level to
maximize the range. Additionally, intelligent control logics
allows the motor control to adapt itself to the use of alternative
propellers, e.g. when optimizing speed or thrust by using
alternative propellers.
14
Catalogue 2007

Motor and power electronics
Catalogue 2007
15

Propeller technology
and hydrodynamics
Top propellers require top motors
Basically, propellers which slowly turn in the water and have a
high pitch and a large diameter, have the highest degree of
effectiveness. A large propeller diameter results in a high
propellant flow, while a high propeller pitch has a positive effect
on the additional speed induced by the propeller. Multiplied by
each other, the propellant flow and the induced additional speed
result in the propulsive power of the propeller. On the other
hand, an increasing circulation speed of the propeller results in
an increasing loss of efficiency.
Conventional outboards in the low-power range fail at using
highly-efficient propellers: Either they do not have enough torque
to move large sloped propellers or they do not have enough
elasticity (availability of torque over a large speed range).
Combustion engines are particularly susceptible to a lack of
elasticity. This is because they only have an extremely low torque
at small speeds. Propellers that would normally have a good
rate of efficiency within the efficient range of the motor stall the
motor when within low speed ranges. The rates of efficiency
for propellers that can be used for low-power class combustion
engines are therefore limited to 20-30%.
Low eddy, high thrust:
The Torqeedo propeller from large shipbuilding
The majority of propellers used in recreational activities are
based on series tests that were carried out in the 40’s to 60’s of
the 20th century in the Wageningen test facility in The
Netherlands as well as by the US Navy. The results of these tests
have been concretized in general construction principles and are
used by rule of thumb.
On the other hand, the most modern large ships have been
equipped for some years now with propellers that are the result
of multi-dimensional optimization calculations. In contrast to
standard propellers, the pitch and camber of the propeller are not
kept (almost) constant across all segments of the propeller.
Instead, the pitch and camber are optimized based on a vortex
grid calculation for each single segment of the propeller in a
stepwise optimization over many thousand iterations. The
additional scope for design resulting from this allows the
additional speed to be induced by the propeller at the highest
rate of efficiency. Due to these characteristics, the
corresponding propeller is designated as a Variable-Pitch-
Variable-Camber (VPVC) Propeller.
To ensure that the Torqeedo motor can fully exploit its strengths
in the maximum torque and in elasticity, and then covert these
into superior efficiency, the Torqeedo propeller has been
carefully adapted to the torque characteristic of the motor.
No compromises: hydrodynamic shaft
Torqeedo outboards are uncompromisingly trimmed to
efficiency. This also applies to all fluidic-sensitive components
such as the shaft and the pylon.
Lattice structure for calculation of the propeller characteristics of the
Variable-Pitch-Variable-Camber (VPVC) Propeller from Torqeedo
Section of the calculated propeller jet
(red for high speeds, blue of low speeds)
16 Catalogue 2007

Propeller technology and hydrodynamics
Background knowledge on propeller geometries
In addition to the important parameters such as the diameter of the propeller and the number of blades (wing vamps),
propellers can also be described by the radial course of the following parameters: Pitch, chordlength, skew, rake as well as the
profile parameters of thickness and camber.
“Pitch” describes the distance covered by a propeller during each complete turn without any slip. Since this idealized size
cannot be established on a moving boat (in practice, slip always occurs), the slip of a propeller is determined with the aid of the
tilt angle of its wing vamps. For propellers in which the pitch varies along the wing (Variable-Pitch Propeller), the pitch is
measured on a circle that is drawn around the middle of the propeller at 70% of the propeller diameter.
Loss of efficiency due to cavitations
Cavitations are the phenomena caused by the formation and closing of cavities within fluids. Cavitations are caused in particular
by fast moving objects within the water such as, e.g. propellers. Due to the fast movement, underpressures result in which the
water starts to boil and evaporate at normal temperatures. The energy used for this is not converted into propulsive power and
is lost as inefficiency. Depending on the quality of the drive system and its propeller, cavitations of various severities may occur.
The two pictures taken with a high-speed camera at a shutter speed of 1/8,000 second show the difference between the Torqeedo
VPVC-Propeller and a standard propeller at comparable operating points:
The standard propeller
shows signs of fluctuating
cavitations on the „suction“
side of the wing tip.
On the other hand, the
Torqeedo
VPVC-Propeller only shows
signs of light Tipp vortex.
Catalogue 2007 17

Torqeedo Travel
2 year
limited
warranty*
*See Torqeedo warranty information for details
18 Catalogue 2007

Torqeedo Travel
The revolutionary boat drive:
ultra lightweight, ultra mobile, ultra strong
The foldable Torqeedo outboards with integrated lithiummanganese
high-performance battery redefine mobility:
• With their integrated lithium-manganese, high-performance
battery, the Travel motors are the only electric outboard
motors which do not need an external battery connection.
• The Torqeedo Travel is a true lightweight: with a total weight
of 11.4 kg (short shaft version) including battery, it is asserting
itself as the lightest outboard on the market.
• The Travel models are the only foldable outboard motors
available on the market. They come in a waterproof travel pack
and, hence, are unique with regard to their transportability.
With their dimensions of 310 x 320 x 450 mm, they can easily
be stowed away on board or at home.
• Together with the BaseTravel and Torqeedo Cruise models,
the Travel models are the most efficient motors around at the
moment. Their efficiency is up to twice that of the conventional
motors.
The sum total of these properties make a Torqeedo Travel motor
into the perfect drive for small boats, dinghies, tenders, jollies,
and daysailors up to 1.5 tons of displacement. There is simply no
competition when it comes to performance, transport and spacesaving
storage – both on board and on land.
Everything in control
Battery display integrated into the battery. Can even
be read-out when the battery is not installed.
Height- and angle-adjustable
telescopic tiller. For stepless
forward/reverse drive.
Integrated lithium-manganese high-performance
battery makes awkward battery
connections a thing of the past. Safe and
maintenance-free
Fluidic optimized foldable shaft
Height-adjustable mounting with tilting
and trimming device
Compact power
Highly-efficient torque motor, power
electronics, and gear
Low eddy, high thrust
Highly-efficient Variable-Pitch-Variable-
Camber (VPVC) Propeller, specially
designed for torque motors.
Charging
unit
Included
Travel
pack
Included
Catalogue 2007
19

To be taken easily:
Due to their unique folding mechanism, the Torqeedo
Travel models can be reduced to a handy format.
In the waterproof travel pack, the motor can be
transported easily. The Torqeedo Travel can also easily
be stored on board and only requires a little space.
This ensures balanced weight distribution during sailing,
and makes it into the optimum electric motor propulsion
system for smaller boats.
The integrated LIMA high-performance batteries are
immune against memory-effects and keep their charge
stable, even when stored for months.
Downwards compatible:
The Travel also runs on lead batteries
For uses where the mobility of the Travel
model is not important or where a larger
battery bank is required, the motor can also
be connected to standard lead batteries
using the batter adapter delivered as an
accessory.
More control by combining stepless
speed control and defined speeds
In addition to the stepless forwards/reverse drive over all power ranges, the
Travel 401 / 801 models are equipped with predefined speeds. These have
been defined for maximization of the range traveled and as 1 hour traveling
time with a full battery (2 hours for Travel 401). This provides the user with
additional possibilities to check and regulate the power consumption and
range of the boat.
Technical Data
Travel 401 S Travel 401 L Travel 801 S Travel 801 L
Input power in watts 400 400 800 800
Rated power in volts 14.8 14.8 29.6 29.6
Final charge in volts 16.8 16.8 33.6 33.6
Propulsive power in watts 175 175 350 350
Maximum overall efficiency in % 44% 44% 44% 44%
Static thrust in kf 18 18 31 31
Total weight in kg 11.4 12.0 11.6 12.2
Weight of motor without battery in kg 7.9 8.5 8.1 8.7
Weight of integrated battery in kg 3.5 3.5 3.5 3.5
Maximum shaft length in cm 59 71 59 71
Integrated battery 300 Wh LIMA 300 Wh LIMA 300 Wh LIMA 300 Wh LIMA
Propeller dimensions in inches 12 x 10 12 x 10 12 x 10 12 x 10
Propeller speed at full power in rpm max. 720 max. 720 max. 720 max. 720
Control Tiller-control Tiller-control Tiller-control Tiller-control
Steering 180° lockable 180° lockable 180° lockable 180° lockable
Tilting device manual manual manual manual
Trim device manual, 7-step manual, 7-step manual, 7-step manual, 7-step
Stepless drive forwards/reverse yes yes yes yes
Additionally preset speeds yes yes yes yes
20
Catalogue 2007

Torqeedo Travel
Range in nm (1 nm ^= 1.852 km)
Range of the Travel 401
20
17.5 17.5
15 15
12.5 12.5
10
Canoe
10
Length: 4.6 m
7.5
Weight: 23 kg
7.5
Range in nm (1 nm ^= 1.852 km)
Range of the Travel 801
20
Canoe
Length: 4.6 m
Weight: 23 kg
5
Dragon
Jolly
5
Length: 8.9 m
Length: 4.7 m
2.5
Weight: 1,700 kg
Weight: 120 kg
Inflatable
2.5
Length: 3.4 m
Weight: 40 kg
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0
Speed in knots (1 kn ^= 1.852 km/h)
Dragon
Length: 8.9 m
Weight: 1,700 kg
Inflatable
Length: 3.4 m
Weight: 40 kg
Jolly
Length: 4.7 m
Weight: 120 kg
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Speed in knots (1 kn ^= 1.852 km/h)
Products and accessories
Article No. Product Description
1107 Travel 401 S Foldable outboard incl. LIMA high-performance battery
Charging unit and travel pack, short-shaft version
1108 Travel 401 L Foldable outboard incl. LIMA high-performance battery
Charging unit and travel pack, long-shaft version
1109 Travel 801 S Foldable outboard incl. LIMA high-performance battery
Charging unit and travel pack, short-shaft version
1110 Travel 801 L Foldable outboard incl. LIMA high-performance battery
Charging unit and travel pack, long-shaft version
1111 Rechargeable battery for Travel 401 LIMA high-performance battery with integrated display of charging state,
300 Wh, 14.8 V
1112 Rechargeable battery for Travel 801 LIMA high-performance battery with integrated display of charging state,
300 Wh, 29.6 V
1113 Charging unit for
rechargeable battery for Travel 401
1114 Charging unit for
rechargeable battery for Travel 801
40 watt charging unit (20 V; 2 amps) for charging the Travel 401,
for power connection with 100-240 V and 50-60 Hz
80 watt charging unit (40 V; 2 amps) for charging the Travel 801,
for power connection with 100-240 V and 50-60 Hz
1115 Battery adapter cable set Travel Adapter for connecting the Torqeedo Travel 401 and 801
Models to standard lead batteries with 12 V (Travel 401) or 24 V
(Travel 801), incl. 3 m connection cable and a short connection
cable to connect two batteries together
1901 Replacement propeller Variable-Pitch-Variable-Camber (VPVC) Propeller,
developed especially for the torque characteristic and
performance range of Torqeedo-motors;
made of high-impact resistant, glass-fiber reinforced PBT
(Polybutylene terephthalate), complete with nuts, disc springs and cylinder pin
Catalogue 2007 21

Base Travel
2 year
limited
warranty*
*See Torqeedo warranty information for details
22
Catalogue 2007

Base Travel
The starting-point for highly efficient outboards
battery capacity is required.
The motors in the BaseTravel range are the stationary
companions to the Travel models. They have the same excellent
efficiency in the drive train but are connected just like conventional
electrical drives via cable connections to standard lead
batteries. Instead of a foldable shaft, they are equipped with a
fixed shaft. As no lithium batteries are integrated into the Base-
Travel models, they are considerably less expensive than the
Travel motors. Additionally, they are also suitable for applications
within the performance range of the Travel line, where higher
The BaseTravel 401 model works with a voltage of 12 V,
whereas the BaseTravel 801 model is operated at 24 V. A cable
connection for standard lead batteries with integrated fuse is
contained within the scope of delivery. Similar to the battery of
the Travel model, the removable cable adapter serves as main
switch of the BaseTravel model. A bridging cable is also
delivered for serial connection of two lead batteries to each
other (for BaseTravel 801).
The cable adapter set of the
BaseTravel as well as the
lithium batteries of the Travel
can be locked onto the shaft
with a bolting device
Upwards compatible:
The BaseTravel also runs on lithium batteries
For uses where the mobility of the BaseTravel
is important or for the use of back-up batteries,
the motor can also be driven using the Travel
replaceable battery, available as an optional
accessory. Using the lithium high-performance
battery, the BaseTravel motors achieve the
same performance as that of comparable Travel
models.
Catalogue 2007 23

Background knowledge on calculating the range of electric motors:
The range and runtimes that can be achieved using electrical drives with specific battery supplies are calculated in four steps as
follows:
1. Calculation of the existing battery capacity: To calculate this, the power of the battery (in volts) is multiplied by the charge
(in ampere-hours). A 12 V battery with 100 Ah therefore has, e.g. a capacity of 1,200 watt hours (Wh), while two batteries
connected in parallel with a total of 24 V and 75 Ah each have a capacity of 1,800 Wh.
2. Calculation of the required amount of energy: The input power required by the motor is considered in the next step.
The BaseTravel 401 has, e.g. an input power of 400 watts. 400 Wh are therefore required for one hour runtime at full power.
3. Calculating the range: An initial range can be calculated taking into account the speeds that can be achieved (compare the
graphic on Page 25). For example, on a dragon sailing boat the BaseTravel 401 reaches a speed of 3.5 knots (6.5 km/h).
With one 12 V battery at 100 Ah (resulting capacity of 1,200 Wh) it could therefore run in theory for 3 hours at full speed and
cover a distance of 10.5 nautical miles (19.5 km). The range calculation for a 1,200 Wh lithium battery power supply would
now be completed.
4. Taking into account the lack of high-current resistance of lead batteries: Lead batteries have a relatively low resistance to
high currents, i.e. their capacity drops significantly under their nominal capacity as soon as a consumer tries to draw higher
currents from them. To calculate a realistic range, this effect must also be part of the calculation. If the appropriate
specifications on high-current efficiency are not published in the data sheet of the battery then the diagram on Page 9 may
provide you with assistance. To do this, the weight of the battery must first be determined, e.g. the weight for the 12 V
battery at 100 Ah in the example above may be 40 kg. If there is a power consumption of 400 W by the motor then there would
be a high-current load of 10 W per kg of battery weight. The loss in effective capacity of the battery resulting from this can
be estimated from the graph and should be less than 20% in the example, depending on the quality of the battery. The range
that could therefore be actually achieved would then be approximately 8.4 nautical miles (15.6 km). Two rules can be derived
from this calculation: Firstly, especially motors with a high input power require large lead battery banks to achieve reasonable
distances. Secondly, drives with bad efficiency waste battery capacity in two ways: On the one hand, they do not sufficiently
convert the used energy into propulsive power. On the other hand, they cause unnecessary high-current loads to the battery,
whereby less capacity is available to be used.
Technical Data
BaseTravel 401 S BaseTravel 401 L BaseTravel 801 S BaseTravel 801 L
Input power in watts 400 400 800 800
Rated power in volts 12 12 24 24
Propulsive power in watts 168 168 336 336
Maximum overall efficiency in % 42% 42% 42% 42%
Static thrust in kf 18 18 31 31
Total weight in kg 8.9 9.5 9.1 9.7
Maximum shaft length in cm 59 71 59 71
Integrated battery no no no no
Propeller dimensions in inches 12 x 10 12 x 10 12 x 10 12 x 10
Propeller speed at full power in rpm max. 720 max. 720 max. 720 max. 720
Control Tiller-control Tiller-control Tiller-control Tiller-control
Steering 180° lockable 180° lockable 180° lockable 180° lockable
Tilting device manual manual manual manual
Trim device manual, 7-step manual, 7-step manual, 7-step manual, 7-step
Stepless drive forwards/reverse yes yes yes yes
Additionally preset speeds yes yes yes yes
24 Catalogue 2007

Base Travel
Range in nm (1 nm ^= 1.852 km)
Range of the BaseTravel 401
Range measurement with 1,920 Wh, e.g. two 12 V / 80 Ah
lead-batteries, parallel connection (weight approx. 52 kg)
70
60
50
40
30
20
10
Dragon
Length: 8.9 m
Weight: 1,700 kg
Rowing boat
Length: 4.4 m
Weight 175 kg
Range in nm (1 nm ^= 1.852 km)
Range of the BaseTravel 801
Range measurement with 1,920 Wh, e.g. two 12 V / 80 Ah
lead-batteries, serial connection (weight approx. 52 kg)
70
60
50
40
30
20
10
0
Dragon
Length: 8.9 m
Weight: 1,700 kg
Rowing boat
Length: 4.4 m
Weight 175 kg
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Speed in knots (1 kn ^= 1.852 km/h)
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Speed in knots (1 kn ^= 1.852 km/h)
Products and accessories
Article No. Product Description
1307 BaseTravel 401 S High efficiency 12 V motor, short shaft version,
including cable connection to standard lead batteries
1308 BaseTravel 401 L High efficiency 12 V motor, long shaft version,
including cable connection to standard lead batteries
1309 BaseTravel 801 S High efficiency 24 V motor, short shaft version,
including cable connection to standard lead batteries and connection
cable for serial connection of two 12 V batteries
1310 BaseTravel 801 L High efficiency 24 V motor, long shaft version,
including cable connection to standard lead batteries and connection
cable for serial connection of two 12 V batteries
1111 Rechargeable battery for Travel 401 LIMA high-performance battery with integrated display of charging state,
300 Wh, 14.8 V, for use with BaseTravel 401
1112 Rechargeable battery for Travel 801 LIMA high-performance battery with integrated display of charging state,
300 Wh, 29.6 V, for use with BaseTravel 801
1113 Charging unit for
rechargeable battery for Travel 401
1114 Charging unit for
rechargeable battery for Travel 801
40 watt charging unit (20 V; 2 amp) for charging the Travel 401 LIMA battery,
for power connection with 100-240 V and 50-60 Hz
80 watt charging unit (40 V; 2 amp) for charging the Travel 801 LIMA battery,
for power connection with 100-240 V and 50-60 Hz
1901 Replacement propeller Variable-Pitch-Variable-Camber (VPVC) Propeller,
developed especially for the torque characteristic and performance range of
Torqeedo-motors; made of high-impact resistant, glass-fiber reinforced PBT
(Polybutylene terephthalate), complete with nuts, disc springs and cylinder pin
Catalogue 2007
25

Torqeedo Cruise
2 year
limited
warranty*
*See Torqeedo warranty information for details
26 Catalogue 2007

Torqeedo Cruise
Highly efficient and powerful – Torqeedo presents the
The most powerful 24 V outboard on the market
With the thrust force of a 6 HP combustion engine, the
Torqeedo Cruise is the emission-free alternative for sailing and
motor boats with displacement of up to three tons.
Equipped with the latest torque technology, an optimized drive
train and an optimized propeller, the Torqeedo Cruise is not only
the most efficient but also the most powerful 24-volt outboard
available on the market.
The Cruise gets its energy either from lead batteries that have
been connected in series (normally two 12 V batteries) or from
the Torqeedo Power, lithium-based batteries.
When using lead batteries within the power range of the Cruise,
the efficiency of a drive is important for two reasons. On the
one hand, an efficient drive converts the used energy better
into propulsive force. A high efficiency of the drive additionally
ensures that more battery capacity is available for consumption:
The more efficient a drive is, the more it prevents the effectively
available battery capacity from being reduced due to
unnecessarily high power intake (compare here the Background
Knowledge on Calculating the Range of Electric Motors on Page
24 as well as the chapter on Battery Technology, on Pages 8/9).
Due to the extraordinary efficiency of the Cruise, it wastes
comparably little energy but its input power of 2,000 Watt is
challenging to the lead battery supply. To compensate for the
high-current characteristics and the loss of capacity of lead
batteries concomitant to this, it is recommendable that you
purchase lead batteries with comparably „good“ high-current
characteristics as well as high rated capacities (ideally 4,800 Wh,
i.e. two times 12 V / 200 Ah or higher rated capacities; compare
Background Knowledge on Calculating the Range of Electric
Motors on Page 24).
Cable set for Cruise 2.0
The cable set for the Cruise 2.0, available as an
optional extra, allows for a simple and safe
connection of the motor. The cable set is comprised
of high-current resistant connection cable
with 35mm 2 cross-sectional area, highcurrent
plugs, a main switch, a fuse, battery
connections and a battery connection cable for
serial connection of two 12 V batteries.
The cable set allows the motor to be connected
to batteries up to 3 m away from it. A 2 m cable
extension is available for larger distances.
Background information on the voltage indicator:
The Torqeedo Cruise 2.0 is designed to work with a nominal voltage of 24 volts in the form of two connected-in-series 12-volt
batteries. When using new lead-gel batteries, the actual measured voltage depicted in the voltage indicator should range
between 27 volts in a loaded state and 20 volts in an almost empty state.
The voltage range between full and empty batteries, however, depends greatly on the batteries used. For this reason, the use
of the voltage indicator as an indicator of the charge state of the connected batteries requires some getting used to, and is
imprecise. If the batteries are not to be included in a more complicated measuring system, however, the voltage indicator
remains the best indicator for calculating the remaining residual capacity of the batteries; hence, it is integrated in the Cruise
models.
Catalogue 2007
27

Electronic remote throttle control for Cruise 2.0
Electronic remote throttle
control for top assembly or
assembly to the right (with
mounting bracket)
Double electronic
remote throttle control
for top assembly
The power of the Cruise can be controlled from the control
console using the electronic remote throttle control, available
as an optional extra. Torqeedo offers two products for this.
The remote throttle control LT can either be attached to the
left sidewall or to the top. The RT model can either be attached
to the right sidewall or to the top.
To control two Cruise motors using the double remote throttle
control, we recommend to combine one LT lever with one RT
lever. For the mounting of the double remote control a top
assembly is required and the use of the mounting plate for
double levers is recommended (available as an optional
extra).
Technical Data
Cruise 2.0 S
Cruise 2.0 L
Input power in watts 2,000 2,000
Rated power in volts 24.0 24.0
Propulsive power in watts 900 900
Maximum overall efficiency in % 45% 45%
Static thrust in kf 55 55
Total weight in kg 18.5 19.0
Maximum shaft length in cm 62.5 74.5
Integrated battery no no
Propeller dimensions in inches 12 x 10 12 x 10
Propeller speed at full power in rpm max. 920 max. 920
Control Tiller control / remote throttle control Tiller control / remote throttle control
Steering 360° lockable 360° lockable
Tilting system gas pressure spring gas pressure spring
Trim system manual, 5-step manual, 5-step
Stepless drive forwards/reverse yes yes
28 Catalogue 2007

Torqeedo Cruise
Range of the Cruise 2.0
Range measurement with one battery
Torqeedo Power 26-77, 2kWh, 18 kg
Range measurement with two lead-batteries,
4.8 kWh (2 x 200 Ah), 130 kg
Range in nm (1 nm ^= 1.852 km)
150
125
100
75
50
Rowing-/Motor-boat
Length: 4.4 m
Weight: 175 kg
30 square metre skerry cruiser
Length: 12.4 m
Weight: 2,600 kg
25
0
1
2
3
4
5
6
Speed in knots (1 kn ^= 1.852 km/h)
Products and accessories
Article No. Product Description
1201 Cruise 2.0 S Powerful 24 V outboard, short-shaft version,
incl. battery voltage display
1202 Cruise 2.0 L Powerful 24 V outboard, long-shaft version,
incl. battery voltage display
1203 Cable set Cruise 2.0 Cable set for connection of Cruise 2.0 to standard lead batteries or to
Torqeedo Power battery; 3 m long, made of high-current resistant connection
cable with 35 mm 2 cross-sectional area, with fuse,
battery connection cables for series connection of two 12 V lead batteries,
complete with high-current plugs and connection plan
1205 Cable set extension for Cruise 2.0 Extension for Cruise cable set, 2 m long, complete with
high-current plugs
1901 Replacement propeller Variable-Pitch-Variable-Camber (VPVC) Propeller, developed especially for the
torque characteristic and performance range of Torqeedo-motors;
made of high-impact resistant, glass-fiber reinforced PBT
(Polybutylene terephthalate), complete with nuts, disc springs and cylinder pin
1902 Electronic remote throttle control LT Remote-control switch for Cruise 2.0, for left or top assembly,
pre-wired incl. 6 m control cable
1903 Electronic remote throttle control RT Remote-control switch for Cruise 2.0, for right or top assembly,
pre-wired incl. 6 m control cable
1904 Assembly plate
for double electronic
throttle control
For easy assembly of a double remote throttle control,
controlling two motors simultaneously
Catalogue 2007
29

Torqeedo Power
Welcome to the present:
Torqeedo Power on a lithium-manganese basis
Torqeedo now provides state-of-the-art batteries for the
electrical boat drive. For boat drives, the Torqeedo Power
batteries stand for an enormous increase in performance
compared to conventional battery systems. Five arguments
speak for Torqeedo Power:
1) Increased energy density over lead batteries: the high-power
batteries of the Torqeedo Power range are lithium based and,
hence, have an enormous energy density. This is a decisive
advantage when you consider the limited volume and weight in
the boat. There are also significant advantages over heavy lead
batteries when it comes to handling.
2) Improved resistance to high current: conventional batteries
can only provide a fraction of their nominal capacity in the case
of load in the typical power range of larger electric motors.
Torqeedo Power batteries, on the other hand, never let you down
even when faced with the utmost loads on a boat.
3) Higher charge stability: Torqeedo Power batteries remain
charged for several months even when they are stored. This is
particularly important for the use of the electric drive as an
auxiliary motor. In this respect too, they are way superior to
conventional batteries.
4) Improved performance in the cold: lead batteries hardly
perform at all at cold external temperatures. The Torqeedo
Power, on the other hand, releases practically its full power even
at cold outside temperatures.
This is a tremendous advantage should an electric motor be used
not only during the summer.
30
Catalogue 2007

Torqeedo Power
Energy density and resistance to high current
Batteries in the Torqeedo Power series are high-current resistant and can also provide energy
efficiently for drives with a power of 2.000 watts and more (in contrast to lead batteries).
Weight in kg
200
180
213
Lead battery with
poor high current
resistance
160
140
Torqeedo
Cruise 2.0
120
100
80
83
Torqeedo
BaseTravel 801
101
Lead- batteries with the
same available capacity
123
104
Lead battery with
relatively “good”
high current resistance
60
40
51
58
67
Torqeedo Power
20
18
18
18 18
0
100 1.000 2.000 6.000
2.010 1.930 1.872 1.728
Effective available capacity of Torqeedo Power in Wh
Discharge capacity in watts
Frauscher 680 Lido with 50 kW electric drive and power supply by Torqeedo Power batteries (PI)
Catalogue 2007
31

Charge stability during storage
Available charge after 1 year of storage as a percentage of the original charge
Original charge 40% of the rated capacity
Original charge 100% of the rated capacity
Storage temperature ° C Torqeedo Power Conventional lead battery Torqeedo Power Conventional lead battery
0 99% 25% 96% 22%
25 98% 15% 95% 13%
40 94% 0% 90% 0%
5) Higher safety standards than all other lithium-based battery
systems: the LIMA lithium-manganese cells used by Torqeedo
are currently the only lithium batteries which also withstand all
safety standards when the safety electronics are switched off.
(See chapter entitled “Battery technology”). Nevertheless, each
and every cell of the Torqeedo Power battery has its own safety
mechanism. Torqeedo is the first provider to make the LIMA cells
available for boat drives.
However, the lifetime of the battery changes dependent on the
storage temperature and the charge state during storage. To
increase the lifetime of the battery it should be discharged when
possible if stored for a longer period of time and it should be
stored in a cool environment. On the other hand, a long storage
time in fully-charged state at high temperatures, e.g. over 40° C,
reduces the lifetime of the battery.
In addition to the advantages mentioned in the above, the
Torqeedo Power Series is also characterized by its long life
expectancy.
Normally, the capacity of a lithium battery system changes with
the passing of time after its production. A lithium battery thereby
loses around 4% of its capacity per annum. This ageing process
is not significantly changed during use by the number of cycles.
The batteries also do not have any memory effect.
Temperature stability
Storage
temperature
° C
Available capacity
as a percentage of
the rated capacity
-20 81
-10 87
0 91
10 96
Technical Data
General data
Capacity
Charge
Rated voltage
Final charge voltage
Weight
Dimensions (length x width x height)
Electrochemical base
Torqeedo Power 26-77 battery block
2.0 kW
77 Ah
25.9 V
29.4 V
18 kg
510 x 176 x 223 mm
Lithium manganese (LIMA)
23 100
30 101
45 102
High-current resistance
Maximum yield
Maximum power consumption
Capacity as a function of the power
3.1 kW
120 A
See diagram on high-current resistance
Charge
Charge characteristic
Duration of charge using 206 W charger
Duration of charge using 588 W charger
CC-CV (Constant Current - Constant Voltage)
< 10 hours
< 4 hours
32
Catalogue 2007

Torqeedo Power
Lithium-Cobalt cells with dangerous reaction on mechanical damage (nailtest)
LIMA cells generally safe, among other things also in case of mechanical damage (nailtest as above)
Life expectancy of LIMA batteries under different conditions
Application example 1
Battery is 6 years old
Storage temperature Ø over the whole year: 20° C
Storage state Ø over the whole year 60%
Number of cycles: 20-80 cycles p.a.
Available residual
capacity 70% (cooler
storage temperatures and
lower charge states
increase the lifetime)
Application example 2
Battery is 6 years old
Storage temperature Ø over the whole year: 40° C
Storage state Ø over the whole year 80%
Number of cycles: 20-80 cycles p.a.
Available residual
capacity 25% (cooler
storage temperatures and
lower charge states
increase the lifetime)
Products and accessories
Article No. Product Description
2101 Power 26-77 PI
(Professional installation)
2102 Power 26-77 UI
(User installation)
2201 Charging unit 206 W
for Power 26-77 PI/UI
2202 Charging unit 588 W
for Power 26-77 PI/UI
LIMA high-performance battery, capacity 1,994 Wh, rated power 25.9 V,
charge 77 Ah, weight 18 kg, unlimited parallel or series connection
to other Torqeedo Power batteries possible, installation only by Torqeedo experts
LIMA high-performance battery, capacity 1,994 Wh, rated power 25.9 V,
charge 77 Ah, weight 18 kg, connection with other
Torqeedo Power batteries limited to 2 batteries for
serial connection and to 4 batteries in total.
Charge unit with lithium charging characteristics (CC-CV charge);
Charge power 206 W, i.e. Torqeedo Power 26-77
is fully loaded in less than 10 hours
Charge unit with lithium charging characteristics (CC-CV charge);
Charge power 588 W, i.e. Torqeedo Power 26-77
is fully loaded in less than 4 hours
Catalogue 2007
33

Company and Contact
Established in February 2005, Torqeedo specializes in the development
and commercialization of top-class electric boat drives.
All motors are developed and manufactured to meet highest
standards in terms of quality, precision and high-performance.
While product management and marketing take an international
approach, development and production are located in Germany.
The company has its headquarters in Starnberg, on Lake
Starnberg. As is the case with many European waterways, the
use of combustion engines on the lake is restricted for nature
preservation purposes. As a rule, anyone wishing to travel on
the lake using an engine has to use electric motors. This was
also what triggered the establishment of Torqeedo: the range of
electric boat motors currently available does not reflect the
state-of-the-art by far: nor does it exhaust the opportunities
presented by electric drives.
Torqeedo has the ambition to keep offering the most innovative,
and the most powerful electric drives on the market. By
exhausting the entire potential in electric drives with regard to
power and comfort, it is Torqeedo’s objective to further distribute
nature-protecting electric drives, and to offer drive solutions
which are just as attractive from an economic as from an
ecological point of view.
Alexandra Weber
Customer Service Manager
You have a suggestion or want to contact Torqeedo
Please call and we will be pleased to help you!
Our number is: +49-(0)8151-268 67-0
Torqeedo GmbH
Petersbrunner Str. 3a
82319 Starnberg
Germany
mail@torqeedo.com
www.torqeedo.com
34 Catalogue 2007

Company and Contact
Catalogue 2007 35

Europe and international:
Torqeedo GmbH
Petersbrunner Str. 3a
82319 Starnberg
Germany
T +49 (0) 8151 / 268 67-0
F +49 (0) 8151 / 268 67-19
mail@torqeedo.com
www.torqeedo.com
Graphics and Industrialdesign www.schlagheck-design.de
North America:
Torqeedo Inc.
22705 W Lochanora Drive
Hawthorn Woods, IL 60047
U.S.A.
T +1 (312) 377 6116
F +1 (312) 644 -0738
mail@torqeedo.com
www.torqeedo.com
Your Torqeedo dealer
Goods are delivered exclusively according to our Terms of
Sale and Delivery according to the currently valid General
Business Conditions of Torqeedo.
We reserve the right to make formal changes and changes
to the price of our products.