Ericom Telecommunication and Energy Technologies Co ...

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Batt-Eri Lithium Iron Phosphate Telco Battery System
Most of the present GSM base station applications 4 units of 12V VRLA batteries are serially
connected and form a group of battery which are parallel connected into 3 or 4 groups. In this
situation 48V 300Ah/400Ah energy storage capacity can be provided as for energy back-up.
In the high power-outage region applications VRLA batteries make many cycles. Due to their limited
cycle life the VRLA batteries are aging by losing their “Ah” capacity. GSM Operators need to replace
VRLA batteries very frequently, this situation increases OPEX of the operator.
SOLUTION = BATT-ERI
Batt-Eri system, is 48V/100Ah Lithium Ferrite Phosphate Energy Storage System (ESS)” designed by
Ericom. During power outage LFP-ESS is discharged. In case of “frequent but short” (

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MCU32 controls the LFP charge and discharge contactors.
CBM15 card reads the voltage and temperature values of the LFP cells.
CBM15 reads the voltage and temperature values in 1sn period and send these data to
MCU32.
Batt-Eri System is made up of Lithium Ferrite Phosphate (LiFePO4-LFP) cells which are made for 48V
based Telecom Energy Storage System. “AIM Energy Technologies Co.” (Affiliated R&D Company of
Ericom) has designed hardware and software control algorithms are used as for battery management
system.
Ericom Telecommunication and Energy Technologies Co.
Buyukdere Cd. No:15/A Hur Han B Blok Kat:3 34381 - Sisli/ Istanbul / Turkey
Telephone: +90 212 330 05 40 Fax: +90 212 330 05 43 e-mail: info@ericom.com.tr

Batt-Eri System Mechanical Structure:
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Most of the “Telco type LFP ESS” producers make the system in monolith case. Unlikely, with
the “modular” mechanical design of Batt-Eri; system could easily be transport to the site and
easily installed in the application area. Batt-Eri system could be transport air freight too
(according to Air freight rules, Lithium batteries cannot be air transported with heavier than
35 Kg boxes)
In Batt-Eri modular structure; 3.2V LFP Cells are grouped in block of 5 units and these 3
blocks positioned are side to side and serially connected to reach 15 cells (48V)
In front of the three LFP blocks, “Battery Management System” unit has been installed.
Metric-8 terminal compatible, barrier type power connectors are suitable for cable
connections in the GSM sites. The plastic barriers are prevent the short-circuit during
installation.
The current limitation parameter of Rectifier for 3 groups of 48V/300Ah VRLA batteries.
Current drain is set to 0,15C and which will be 45A. 45A charging current can charge the LFP
in 2,5 hour. When the LFP is charged VRLA batteries will be take into float charge.
Ericom Telecommunication and Energy Technologies Co.
Buyukdere Cd. No:15/A Hur Han B Blok Kat:3 34381 - Sisli/ Istanbul / Turkey
Telephone: +90 212 330 05 40 Fax: +90 212 330 05 43 e-mail: info@ericom.com.tr

Batt-Eri System Remote Monitoring & Control :
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In the Batt-Eri BMS unit there is a GSM/GPRS module.
GSM/GPRS module is connected to MCU32 card.
MCU32 sends “keep alive” message to remote monitoring server and basic alarms and
voltage data will be sent in this data package
Keep alive message period is set by the server (1 sec to hours)
Remote Monitoring & Control engineer can initiate an online connection to site over the
server. In this mode MCU32 can send more detailed parameters to server in every 1-5 sec.
Remote Monitoring & Control engineer can manage the server. If it is needed battery group
currents and charging parameters can be adjusted by the engineer.
Server could download the version updates to MCU32 card’s SD Card flash memory and
MCU32 install the new version firmware onto its memory itself
Ericom Telecommunication and Energy Technologies Co.
Buyukdere Cd. No:15/A Hur Han B Blok Kat:3 34381 - Sisli/ Istanbul / Turkey
Telephone: +90 212 330 05 40 Fax: +90 212 330 05 43 e-mail: info@ericom.com.tr

Why you need Batt-Eri?
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Batt-Eri system can extend the operation life of GSM base station battery backup system
Batt-Eri can work 45-50 o C and decrease climatization needs for base station shelter
System can lower VRLA junk formation.
By the Remote Monitoring & Control system, the total energy back up unit can be monitored
and periodic maintenance can be made.
With this solution “Total Operation Cost of The GSM Operators” will be decreased.
Ericom Telecommunication and Energy Technologies Co.
Buyukdere Cd. No:15/A Hur Han B Blok Kat:3 34381 - Sisli/ Istanbul / Turkey
Telephone: +90 212 330 05 40 Fax: +90 212 330 05 43 e-mail: info@ericom.com.tr

Technical Parameters:
Physical Dimensions:
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Modular Version
Battery Blocks: 30 * 17 *33 cm (Height * Width * Depth), 23kg
BMS: 19 * 51,6 * 10 cm (Height * Width * Depth), 6,7kg
Total System: 30 * 51,6 * 43 cm (Height * Width * Depth), 75,7kg
MonoblockVersion
30 * 52 * 38 cm (Height * Width * Depth), 74 kg
Electrical Parameters:
Input Voltage: -42V.. – 56VDC
LFP Battery Capacity: 100Ah
LFP Charge Current: Max 100A (1C)
LFP Charge Voltage: Max 54V
>2000 cycle on 100% DoD (20-25 o C)
>3000 cycle on 80% DoD (20-25 o C)
Environmental Parameters:
Operation Temp: 0.. 50 o C
Relative Humidty: %90 RH
Interface Parameters:
9 Pin DB-Female type RS232 PC interface (9600,8,n,1)
Mini USB interface
External / Internal GSM-GPRS modem for Remote monitoring & Control system server
2 pole *Metric-8 barrier type power connector
5 LED LFP State of Charge display
3 LED System Alarm and Monitoring dsiplay
Batt-Eri System has been designed by the affiliated R&D company of Ericom, AIM Energy Technology Co. Inc.
Ericom Telecommunication and Energy Technologies Co.
Buyukdere Cd. No:15/A Hur Han B Blok Kat:3 34381 - Sisli/ Istanbul / Turkey
Telephone: +90 212 330 05 40 Fax: +90 212 330 05 43 e-mail: info@ericom.com.tr