The 3S 100A LiFePO4 Battery BMS is a Battery Management System board designed specifically for 3-cell series LiFePO4 (Lithium Iron Phosphate) pack the chemistry used in solar storage, EV auxiliary power, and high-cycle-life portable power builds. LiFePO4 cells have a different charge and discharge voltage profile from standard Li-Ion 18650 cells – full charge per cell is 3.65V rather than 4.2V, and the safe discharge cutoff is lower. A BMS designed for Li-Ion 18650 chemistry cannot be used on LiFePO4 cells because the voltage thresholds do not match. This board is calibrated specifically to the LiFePO4 voltage.
The lifepo4 battery protection board manages three protection functions simultaneously. Overcurrent protection triggers at 100A – the board disconnects the pack output when discharge current exceeds this threshold, protecting both cells and load. Short circuit protection disconnects instantly on a dead short at the output terminals. Balance charging at 60mA per cell during the charge cycle brings lagging cells up to 3.65V alongside the others, preventing one cell from reaching full charge while others remain undercharged – the primary cause of capacity fade in unbalanced packs.
The 3s 100a lifepo4 bms nominal pack voltage of 9.6V from three LiFePO4 cells in series reaches 10.95V at full charge. The 60A charging current rating allows fast charging from high-current chargers without the BMS becoming a bottleneck. The lifepo4 battery protection board suits solar battery bank BMS replacement, e-bike LiFePO4 battery pack protection, and UPS backup battery management. This 3s lifepo4 bms board is available on StemVolt and its uses on LiFePO4 battery management and 3S battery pack protection.
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Features:
- LiFePO4 chemistry-specific voltage thresholds ensure cutoff and balance tuning.
- 100A overload cutoff protects battery cells and loads during high-current discharge events.
- Instant short-circuit protection safely disconnects output upon detecting a terminal dead short.
- Supports up to 60A charge current without bottlenecking high-power charging sources.
- 60mA balance current equalizes 3S cell voltages during every charge cycle.
Technical Specifications:
 Applications:
- Protects 3S LiFePO4 batterys in off-grid solar energy storage systems.
- Manages and balances 3-cell packs providing auxiliary power for electric bicycles.
- Safeguard LiFePO4 battery packs deployed in uninterrupted power supply backup modules.
- 3S 100A LiFePO4 battery bms manages cell balance in portable power station.
Package Include:
- 1 x 3S 100A LiFePO4 Battery BMS
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