Payment & Shipping Terms:
|Nominal Voltage:||48V||Nominal Capacity:||50Ah|
|Charge Voltage:||54.75V||Discharge Cut-oﬀ Voltage:||37V|
|Max Charge Current:||50A||Discharge Current:||50A|
50Ah Ups Backup Battery,
3U Ups Backup Battery,
2.4kWh Backup Lithium Ion Battery
48V 50Ah 3U Telecom Batteries, back up lithium ion battery
|1.3||Nominal voltage||48V (LFP-15S)|
|1.4||Internal resistance||≤50mΩ @1kHz AC|
|1.5||Normal charge voltage||57.00±0.3V|
|1.6||Float charge voltage(for Standby use)||51.75±0.3V|
|1.7||Allowed MAX charge current||25A|
|1.8||Recommended charge current||25A|
|1.11||Allowed MAX discharge current||50A|
|1.12||End of discharge voltage||37.5V|
|1.13||Dimension||Width 482.6±5 mm(internal 442±5mm)|
|Height 133.2±3 mm|
|Depth 477±5 mm|
|1.14||Weight (No accessories)||Approx. 28.0Kg|
|1.16||Self-discharge rate||Residual capacity||≤3%/Month; ≤15%/ year|
|Recover capacity||≤1.5%/Month; ≤8%/ year|
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.
|2.1||Normal Capacity||50Ah||After Normal charge, discharge @0.5C current to the end of discharge voltage.|
|2.2||Internal Impedance||≤50mΩ||@50% SOC @1kHz AC internal resistance test instrument.|
|2.3||Short circuit protection||Auto cutoff load when short circuit||Connect the positive and negative of this battery pack through a lead with 0.1Ω resistance.|
|2.4||Cycle life @DOD100%||≥2000 cycles||After Normal charge,discharge @0.33C current to the end of discharge voltage. Repeat above process until discharge capacity reduce to 80% of initial value.|
Capacity @specified temperature
Capacity @ 25℃
|2.6||Capacity retention rate|
|After normal charge, store the battery @25±5℃ for 28days, then discharge capacity @0.2C,the retention capacity accord with criterion.|
3. Operation instruction
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.
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.
Contact Person: Jerry Yang