Description
Build your own 12.88V, 334Ah LiFePO4 battery using matched genuine EVE LF334 prismatic cells and a correctly selected JK BMS.
The 4S1P configuration provides approximately 4.30kWh nominal energy for caravan, camper, marine, backup-power and compact off-grid solar projects.
Genuine EVE cells
Each EVE LF334 cell is rated at 3.22V, 334Ah and 1075.48Wh nominal energy. EVE specifies 4,000 cycles to 80% SOH at 25°C under EVE specified test conditions.
JK smart battery management
The included JK-B2A8S-20P supports this low-voltage LiFePO4 configuration and provides a 200A current rating, 2A active balancing, Bluetooth monitoring and configurable protection settings.
Key features
- 4 matched genuine EVE LF334 334Ah cells
- 12.88V nominal, 4S1P configuration
- Approximately 4.30kWh nominal energy
- JK-B2A8S-20P 200A smart BMS with 2A active balancing
- Bluetooth monitoring and communication
- Busbars, terminal hardware and balance wiring supplied
What’s included
- 4 × matched EVE LF334 334Ah prismatic cells
- 1 × JK-B2A8S-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 | 4S1P |
|---|---|
| Nominal voltage | 12.88V |
| Nominal capacity | 334Ah |
| Nominal energy | 4301.92Wh / 4.30kWh |
| Cell model | EVE LF334 |
| Cell quantity | 4 |
| Cell chemistry | LiFePO4 / lithium iron phosphate |
| Cell nominal voltage | 3.22V |
| Maximum series charge voltage | 14.6V based on 3.65V per cell; configure equipment appropriately |
| BMS | JK-B2A8S-20P |
| BMS current rating | 200A continuous; completed-system limit may be lower |
| Active balancing | Up to 2A |
| Communication | Bluetooth |
| Cell standard discharge | 167A / 0.5C under EVE specified conditions |
| Cell cycle-life test rating | 4,000 cycles to 80% SOH at 25°C under EVE specified test conditions |
| Assembly state | Unassembled DIY component kit |
