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Shenzhen Topband Battery Co., Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate, dedicated to designing, researching, manufacturing, and exporting LiFePO4 batteries( cell & pack & energy storage system) to
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BMS 2.4kWh 1kHz 48V 50Ah 3U Ups Backup Battery TB4850F-T110

Shenzhen Topband Battery Co., Ltd

BMS 2.4kWh 1kHz 48V 50Ah 3U Ups Backup Battery TB4850F-T110

Brand Name : Topband

Model Number : TB4850F-T110

Certification : CE, TUV, UL, UN38.3, etc.

Place of Origin : China

MOQ : 1

Price : Negotiable

Payment Terms : L/C, T/T

Supply Ability : 1GWH/year

Delivery Time : 10-40 days

Packaging Details : Standard Export Package

Nominal Voltage : 48V

Nominal Capacity : 50Ah

Charge voltage : 54.75V

Discharge cut-off voltage : 37V

Max Charge current : 50A

Discharge current : 50A

BMS : Yes

case size : 3U/19"

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48V 50Ah 3U Telecom Batteries, back up lithium ion battery

1. Specifications:

1.1Normal capacity50Ah
1.2Nominal energy2.4kWh
1.3Nominal voltage48V (LFP-15S)
1.4Internal resistance≤50mΩ @1kHz AC
1.5Normal charge voltage57.00±0.3V
1.6Float charge voltage(for Standby use)51.75±0.3V
1.7Allowed MAX charge current25A
1.8Recommended charge current25A
1.11Allowed MAX discharge current50A
1.12End of discharge voltage37.5V
1.13DimensionWidth 482.6±5 mm(internal 442±5mm)
Height 133.2±3 mm
Depth 477±5 mm
1.14Weight (No accessories)Approx. 28.0Kg
1.15Operation temperatureCharge0~45℃
1.16Self-discharge rateResidual capacity≤3%/Month; ≤15%/ year
Recover capacity≤1.5%/Month; ≤8%/ year
1.17Storage environment≤1month-20~+60℃,5~75%RH
Recommend environment15~35℃,5~75%RH

2. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5℃; Humidity:45%~75%.
Normal charge:Charge battery under CC(0.33C)/CV(54.8V) mode until over charge protection or the charge current reduce to 0.02C, and then rest for 1h.

2.1Normal Capacity50AhAfter Normal charge, discharge @0.5C current to the end of discharge voltage.
2.2Internal Impedance≤50mΩ@50% SOC @1kHz AC internal resistance test instrument.
2.3Short circuit protectionAuto cutoff load when short circuitConnect the positive and negative of this battery pack through a lead with 0.1Ω resistance.
2.4Cycle life @DOD100%≥2000 cyclesAfter Normal charge,discharge @0.33C current to the end of discharge voltage. Repeat above process until discharge capacity reduce to 80% of initial value.

Discharge temperature



the percentage
accord with criterion

Capacity @specified temperature

Capacity @ 25℃

2.6Capacity retention rate

remain capacity


After normal charge, store the battery @25±5℃ for 28days, then discharge capacity @0.2C,the retention capacity accord with criterion.

3. Operation instruction

  • Charge and discharge voltage: shall not exceed the maximum limit voltage specified in the specification
  • Charging and discharging temperature: the charging temperature of the battery must be in accordance with the temperature range specified in the specification
  • Charging sequence: charging by constant current before constant voltage. There is a danger if the battery is charged upside down.

Special note:

A short time of overcharging and over-discharging will not affect the use of the battery, but a long time of over-discharging or overcharging will affect the functional failure of the battery, or the battery is permanently unable to use, serious safety risks, need for a long time floating charge, please use the specification recommended floating charging mode. When the battery is not used for a long time, the self-discharge characteristics of the battery will also lead to over-discharge. In order to prevent the occurrence of over-discharge, the battery should maintain a certain amount of electricity and maintain its voltage at 50% SOC state.

Packaging & Shipping

1. Pack in safety industrial package, with IATA shipping standard.
2. For sample or small order: ship by DHL, UPS, FedEx and TNT etc…
3. For large order, ship by AIR or OCEAN.

Product Tags:

50Ah Ups Backup Battery


3U Ups Backup Battery


2.4kWh Backup Lithium Ion Battery

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