AkuBox LiFePO4 280Ah 51.2V CAN2.0/RS485 Stackable

AkuBox LiFePO4 280Ah 51.2V CAN2.0/RS485 Stackable

The high-capacity AkuBox 280 Ah / 51.2 V battery combines a set of powerful LiFePO4 prismatic cells with advanced Jikong (JK) BMS technology. This combination ensures precise active balancing and comprehensive cell protection, making AkuBox the optimal solution for modern photovoltaic systems (PV).

Thanks to its high reliability and modular design, the storage capacity can be scaled as desired—up to 15 units can be connected in parallel, meeting the needs of both family homes and larger commercial buildings.

Key features: 

• Integrated Smart BMS with active balancing: Unlike conventional passive systems, it actively balances the voltage between cells, maximizing usable energy and significantly extending battery life.
• Wide system compatibility: AkuBox has CAN 2.0 and RS485 communication ports, which ensure seamless integration with leading solar inverters (Must, Victron Energy, Growatt, GoodWe, DEYE, and others).
• Maximum safety and durability: Certified cells are protected by a robust cold-rolled steel (SPPC) chassis with IP40 protection. An integrated DC circuit breaker is mounted on the front panel for overcurrent protection.
• Battery monitoring and management: The front panel is equipped with an LCD for instant diagnostics and communication protocol settings for communication with inverters.
  
  

Technical specifications:

• Nominal voltage: 51.2V
• Nominal capacity: 280 Ah
• Energy: 14336 Wh
• Communication: CAN2.0 / RS232 / RS485
• Connectivity: Bluetooth
• Active balancing: YES
• Internal resistance: ≤ 45 mΩ @ 50% SOC
• Efficiency: > 96%
• Number of cycles / service life: > 8000 @ 80% DoD
• Number of connected parallel modules: up to 15
• Charging current: 100 A
• Maximum charging current: 120 A
• Charging voltage: 57.2V
• BMS charging voltage limit: < 58.4 V (3.65 V / cell)
• Recharge voltage limit: > 54.5 V (3.4 V / cell)
• Balance voltage: < 55.2 V (3.45 V / cell)
• Maximum continuous discharge current: 200 A
• Maximum discharge current (3 seconds): 250 A
• BMS discharge current: 300 A / (300 ms)
• Switching voltage for balancing: 55.2 V (3.45 V / cell)
• Discharge cut-off voltage: 44.8 V (2.8 V / cell)
• BMS cut-off voltage: > 43.2 V (2s) (2.7 V / cell)
• Recharge cut-off voltage: > 49.6 V (3.1 V / cell)
• Short-circuit protection evaluation time: 250 μs ~ 500 μs
• Certificates: CE (battery), UN38.3 (battery), UL1642 & IEC62133 (cells)
• Transport classification: UN 3480, class 9
• Dimensions (W x H x D): 440×250×750 mm
• Weight: 100 kg (with packaging 120 kg)
• Terminal tightening torque: 9 Nm ~ 11 Nm
• Housing material: SPPC
• Protection rating: IP 40
• Operating temperature / discharge: -20 °C ~ 55 °C
• Operating temperature / charging: 0 °C ~ 45 °C
• Storage temperature: -5 °C ~ 35 °C
• BMS disconnection temperature limit: 55 °C
• BMS reconnection temperature: 45 °C

ℹ️ Multiple batteries cannot be connected in series.

❗ The BMS is factory set to specific parameters. Any unauthorized intervention or change to the set parameters will result in permanent damage to the product and loss of warranty.

Mobile app for Jikong BMS

1. Monitor the voltage of individual battery cells, current, temperature, and other parameters in real time. This Smart BMS has integrated Bluetooth technology that allows you to control and monitor your battery directly from your mobile phone or tablet. To get the app, use the QR code below or the links provided in the articleHow to use the Jikong BMS app.

❓Will this battery communicate with your inverter?Check out thiscompatibility overview.