1938 LaSalle Production - GM Heritage Center

AUTOMATIC BATTERY FILLER FOR ALL SERIES CARS
THE CADILLAC Automatic Battery Filler
is one of the most important inventions in
the automotive field in recent years. Its
primary advantage lies in the fact that it
maintains the correct water level in the car battery
at all times, materially lengthening battery
life and reducing considerably the number of
rechargings required.
The Cadillac Automatic Battery Filler does
away with the inaccuracies of hand filling. It
eliminates guessing as to when the battery needs
water. By maintaining the correct water level at
all times, over-heating and buckling of plates due
to lack of water are eliminated.
Low water level, while the most serious, is not
the only condition that affects the life of a car
battery. Invariably, when a battery is filled by
hand, too much water is put into the battery.
Over-filling leads to slopping and boiling out of the
electrolite solution which results in a diluted
electrolite and less acid strength in the battery.
Corroded battery terminals arc a direct result
PROPER
WATER
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LEVEL
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DANGER
Overfilled
DANGER
Top of
Plate
of a battery having been over-filled and the
solution which boiled out, having reached the
terminals. Thus, over-filling of the battery has
serious consequences. It not only causes corrosion
which reduces voltage by creating resistance, but
dilutes the electrolite solution, reducing the battery's
strength and ability to absorb and hold a
charge.
The Cadillac Automatic Battery Filler is composed
of 3 reservoir bottles, one bottle for each
cell of the battery. These bottles function independently
of one another and supply water to each
cell of the battery as required
. The water is carried
from the reservoir 1¾¾¾*'¾ ^¾¾^
bottles to the battery
through a rubber hose
which automatically
adds water when the
level falls below the end
of the hose.
A second air vent
tube allows the vapors
and gases generated in
the battery to be carried
to the reservoir
bottles where they are
condensed and become
a part of the solution in
the reservoir and eventually
are returned to
the battery.
The reservoir bottles provide a visible gauge
of battery condition and give warning of impending
defects in the battery. When the separators
between the plates in a battery begin to wear,
the solution will become muddy and full of sediment.
Due to the fact that the electrolite solution
circulates from the battery to the reservoir bottles,
the sediment and discoloration are carried into
the bottles and the exact condition taking place
in any battery cell is visible at a glance.
Should a battery develop a cracked cell or a
slow leak, more water is required to maintain the
proper level and the increased water consumption
of any one cell will show immediately in the
reservoir bottle.
This same warning would be given if the generator
is charging too high or the battery develops
an over-charged condition or a .^af-jk
short across the plates, as each /, j| ,
of these conditions causes an in- a "*Local
creased use of water.
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