Description
Build your own 25.6V, 314Ah LiFePO4 battery using matched genuine EVE MB31 prismatic cells and a correctly selected JK BMS.
The 8S1P configuration provides approximately 8.04kWh nominal energy for mid-sized off-grid solar, cabin, workshop and backup-power projects.
Genuine EVE cells
Each EVE MB31 cell is rated at 3.2V, 314Ah and 1004.8Wh nominal energy. EVE specifies 8,000 cycles to 70% SOH under EVE specified test conditions.
JK smart battery management
The included JK-PB2A16S-20P inverter BMS is configured for this pack and provides a 200A current rating, 2A active balancing, Bluetooth, CAN, RS485, temperature monitoring, configurable protection and pre-charge functionality.
CAN or RS485 hardware does not guarantee compatibility with every inverter. Confirm the supported protocol, firmware and cable pinout before ordering or commissioning.
Key features
- 8 matched genuine EVE MB31 314Ah cells
- 25.6V nominal, 8S1P configuration
- Approximately 8.04kWh nominal energy
- JK-PB2A16S-20P 200A smart BMS with 2A active balancing
- Bluetooth, CAN and RS485 monitoring and communication
- Busbars, terminal hardware and balance wiring supplied
What’s included
- 8 × matched EVE MB31 314Ah prismatic cells
- 1 × JK-PB2A16S-20P 200A JK BMS
- Inter-cell busbar set
- Required cell terminal hardware for the supplied cell batch
- BMS balance-lead harness and associated monitoring wiring
DIY kit notice
This is an unassembled component kit, not a completed or certified drop-in battery. An enclosure, insulated cell restraint, main battery cables, lugs, fuse or circuit breaker, isolator, charger and inverter are not included unless separately stated.
Assembly should only be undertaken by a competent person familiar with high-current DC battery systems. Confirm polarity, use suitable cell restraint and insulation, install DC-rated over-current protection and configure the BMS before commissioning.
Key specifications
| Configuration | 8S1P |
|---|---|
| Nominal voltage | 25.6V |
| Nominal capacity | 314Ah |
| Nominal energy | 8038.4Wh / 8.04kWh |
| Cell model | EVE MB31 |
| Cell quantity | 8 |
| Cell chemistry | LiFePO4 / lithium iron phosphate |
| Cell nominal voltage | 3.2V |
| Maximum series charge voltage | 29.2V based on 3.65V per cell; configure equipment appropriately |
| BMS | JK-PB2A16S-20P |
| BMS current rating | 200A continuous; completed-system limit may be lower |
| Active balancing | Up to 2A |
| Communication | Bluetooth, CAN and RS485 |
| Cell standard discharge | 0.5P under EVE specified conditions |
| Cell cycle-life test rating | 8,000 cycles to 70% SOH under EVE specified test conditions |
| Assembly state | Unassembled DIY component kit |
