51.2V 400Ah 21KWh Floor Standing Battery Cabinets Perfect for Residential Energy Storage Systems and Commercial Applications
• Balance each battery to extend battery life.
• With RS485 and CAN communication interfaces, it can meet the communication needs of different devices
Electrical Characteristics
Nominal Voltage (V) :51.2V
Nominal Capacity（Ah）: 308Ah@0.3C
Nominal Capacity (KWh) :15.77KWh
Cycle Life ≥6000 Cycles @0.3C/0.3C
Serial Number : 16S2P
Communication Port : RS485/CAN
Charging Parameters
Charge Voltage（V）: 57.6V
Charge Current（A）: 30A（Recommend ）
Max Charge Current（A） 50A
Peak Charge Current（A） 100A
Charging Mode Constant Current / Constant Voltage
Discharge Parameters
Discharge Cut-off Voltage : 46.4V
Discharge Current: 50A （Recommended）
Max Discharge Current :100A
Operating Environment
Charge Temperature : 0℃ to 55℃
Discharge Temperature : -20℃ to 60℃
Storage Temperature : 0℃ to 40℃
Other Parameters
Shell Material : Sheet metal chassis
Battery Size : 515（L）*515（W）*1100（H）mm
Pack Weight : 150Kg
Protection Class : IP55
Installation Method : Floor standing
Remarks
1. The charging voltage of the battery shall not exceed the parameters in the specification
2. When the battery is in use, the discharge voltage shall not be lower than the parameters listed in the specification, otherwise the low-voltage protection may be triggered
3. The charging current and discharging current of the battery shall not exceed the parameter range listed in the specification, otherwise the battery may be damaged
Technical Specification
| Model | RK51-LFP308 | RK51-LFP368 | RK48-LFP308 | RK48-LFP368 |
| Nominal Voltage(V) | 51.2V | 51.2V | 48V | 48V |
| Nominal Capacity(Ah) | 308Ah | 368Ah | 308Ah | 368Ah |
| Usable Capacity(KWh) | 15.76KWh | 18.84KWh | 14.78KWh | 17.66KWh |
| Dimension(L*W*H,mm) | 515 *515 *1100 mm | 515 *515 *1100 mm | 515 *515 *1100 mm | 515 *515 *1100 mm |
| Weight(Kg) | 150kg | 180kg | 139kg | 169kg |
| Cycle Life | 4000~6000 , 25℃ | 4000~6000 , 25℃ | 4000~6000 , 25℃ | 4000~6000 , 25℃ |
| Communication Port | RS232 .RS485 .CAN | RS232 .RS485 .CAN | RS232 .RS485 .CAN | RS232 .RS485 .CAN |
| Charge Temperature ℃ | 0℃ to 55℃ | 0℃ to 55℃ | 0℃ to 55℃ | 0℃ to 55℃ |
| Discharge Temperature ℃ | -20℃ to 60℃ | -20℃ to 60℃ | -20℃ to 60℃ | -20℃ to 60℃ |
| Storage Temperature | 0℃ to 40℃ | 0℃ to 40℃ | 0℃ to 40℃ | 0℃ to 40℃ |
| Discharge Cut Off Voltage (V) | 46.4V | 46.4V | 43.5V | 43.5V |
| Charge Voltage(V) | 57.6V | 57.6V | 54V | 54V |
| Internal Impedance(mΩ) | ≤50mΩ | ≤50mΩ | ≤50mΩ | ≤50mΩ |
| Charge Current (A) | 30 (Recommended) | 30 (Recommended) | 30 (Recommended) | 30 (Recommended) |
| 50 (Max) | 50 (Max) | 50 (Max) | 50 (Max) | |
| Discharge Current (A) | 50(Recommended) | 50(Recommended) | 50(Recommended) | 50(Recommended) |
| 100(Max) | 100(Max) | 100(Max) | 100(Max) | |
| Design Life(Years) | 10~15 | 10~15 | 10~15 | 10~15 |
