Key benefits Keeps adjacent lithium cells balanced automatically to improve pack uniformity and reliability. Reduces voltage differences between neighboring cells, which helps prevent performance loss caused by cell imbalance. Simple, autonomous operation — the board triggers balancing only when needed, reducing unnecessary power loss. Function and operating principle Adjacent differential equalization: the board uses an inductive working principle and an internal control chip to equalize voltage between neighboring cells. Automatic trigger and stop thresholds: balancing begins when the voltage difference between adjacent cells exceeds 0.1 V and continues until the difference is reduced to within 0.03 V, at which point the board stops balancing. Compatibility and safety Designed for use with lithium battery packs. It must be used together with a lithium battery protection board when connected to the battery. Not a maintenance or charging tool: this board is not intended to serve as a maintenance device, charger, or standalone protection unit. Performance highlights Autonomous balancing action based on measured adjacent-cell voltage differentials. Precise thresholds: balancing engages above 0.1 V and ceases at 0.03 V differential, providing controlled, repeatable equalization. Typical applications Multi-cell lithium battery packs in DIY or custom energy storage systems where adjacent-cell balancing is required. Battery packs for electric bicycles, scooters, or other light electric vehicles that use a separate protection board. Solar storage or backup systems that use lithium cells and a protection board to manage charging and discharging. Practical notes Always pair this balancing PCB with an appropriate lithium battery protection board before connecting to the battery. This board performs adjacent-cell equalization only; overall pack management (overcharge, overdischarge, short-circuit protection) must be handled by the battery protection board.