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LIB4-5120Wh 48V Server Rack Battery

LIB4-5120Wh rack standard backup battery is based on Lithium iron phosphate battery, It has been designed to provide backup power for telecom equipment or energy storage system in household. It has excellent safety, high energy density, long lifetime, very nice temperature performance, green power newly of excellent safety and high reliability.


1. 6000 Cycles (25℃, 80% DOD) for effectively lower total of ownership cost;
2. Low maintenance batteries with stable chemistry;
3. Battery Management System (BMS) is incorporated against abuse;
4. up to 6 months thanks to its extremely low self discharge (LSD) rate and no risk of sulphation;
5. Save time and increase productivity with less down time thanks to superior charge/discharge efficiency;
6. Suitable for use in a wider range of applications where ambient temperature is unusually high: up to +60°C;
7. Lithium batteries provide more Wh/Kg while also being up to 1/3 the weight of its SLA equivalent.

Applications include:

•Solar Storage
•Switching applications and more
•Base transceiver station
•Communication equipments
•Central office
•Telecommunication systems
•Electronic cash registers
•Microprocessor based office machine

Technical Data

Nominal Voltage48 V
Nominal Capacity100 Ah
Capacity @ 20A300 min
Energy5120 Wh
Resistance≤40 mΩ @ 50% SOC
Module ParallelUp to 16 packs
Recommended Charge Current20A
Maximum Charge Current100A
Recommended Charge Voltage54V
BMS Charge Cut-Off Voltage<54.7 V (3.65V/Cell)
Reconnect Voltage>54 V (3.6V/Cell)
Balancing Voltage<54 V (3.6V/Cell)
Maximum Batteries in Series15 (*Consult MUST)
Maximum Continuous Discharge Current100 A
Peak Discharge Current110 A (3s)
BMS Discharge Cut-Off Current150 A (300ms)
Balancing open voltage51.7 V (3.45V/Cell)
Recommended Low Voltage Disconnect41.2 V (2.75V/Cell)
BMS Discharge Cut-Off Voltage>30.0V (2s) (2.0V/Cell)
Reconnect Voltage>37.5 V (2.5V/Cell)
Short Circuit Protection250 ~ 500 μs
CertificationsCE (battery) UN38.3 (battery)
UL1642 & IEC62133 (cells)
Shipping ClassificationUN 3480, CLASS 9
Dimension (L x W x H)482 x 480 x 133 mm
19.0 x 18.9 x 5.2″
Approx. Weight20.0 lbs (44 kg)
Terminal TypeDIN POST
Terminal Torque80 ~ 100 in-lbs (9 ~ 11 N-m)
Case MaterialSPPC
Enclosure ProtectionIP54
Discharge Temperature-4 ~ 131 ºF (-20 ~ 55 ºC)
Charge Temperature-4 ~ 113 ºF (0 ~ 45 ºC)
Storage Temperature23 ~ 95 ºF (-5 ~ 35 ºC)
BMS High Temperature Cut-Off149 ºF (65 ºC)
Reconnect Temperature131 ºF (55 ºC)
Heating Temperature Range-4 to 41 ºF (-20 to 5 ºC)
Heating TimeApproximately 1 hour @ 7.5 A
BMS Heating Foil Cut-Off158 ºF (70 ºC)