AmpereX 4S Active Balancing Smart BMS — 12V LiFePO₄

The AmpereX 4S Active Balancing Smart BMS is the premium choice for 12V LiFePO₄ pack builders who want active cell balancing for longer battery lifespan. Designed for 4S LiFePO₄ configuration (12.8V nominal), it monitors all 4 cells individually. Unlike passive BMS units, this board uses active balancing (up to 2A transfer current) to equalize cell voltages during charge — dramatically improving pack consistency and extending overall battery lifespan. This is the same technology pioneered by leading brands like JK BMS, now available from AmpereX for the Pakistani market. Built-in protections include overcharge (per-cell cutoff at 3.65V), over-discharge (2.5V cutoff), over-current, short-circuit, and temperature monitoring (-20°C to 75°C). Whether you're building a DIY solar bank, upgrading a UPS system, or assembling a custom e-mobility pack — active balancing is the single biggest upgrade for LiFePO₄ longevity. Available now from AmpereX Pakistan with expert installation support.