Product description Key benefits Prevents cell imbalance in series lithium battery packs by equalizing voltage between adjacent cells, extending usable pack life and improving pack reliability. Automatic, hands-free operation: balancing starts and stops on its own based on measured voltage difference; no manual intervention required. Simple integration: designed to work together with a lithium battery protection board for safe, controlled connection and operation. How it works (functional details) Operates on an adjacent-cell compensation principle. The internal chip monitors the voltage difference between neighboring cells. Balancing is triggered when the adjacent cell voltage difference exceeds 0.1 V. Balancing continues until the adjacent cell voltage difference is reduced to within 0.03 V, at which point the module stops balancing. This module performs cell-to-cell (adjacent) compensation only; it is not a standalone maintenance or charging device. Compatibility and required connections Intended for use with lithium battery packs that include a lithium battery protection board. Connection to the pack must be made via that protection board. Not suitable as a substitute for a battery charger, maintainer, or standalone protection circuit. Important limitations This board follows the adjacent compensation principle and cannot serve as a maintenance tool or replace full battery management systems. Always pair with an appropriate lithium battery protection board and follow the protection board and battery manufacturer’s wiring and safety instructions. Attributes and performance Function: automatic adjacent-cell voltage equalization (balancing). Control: internal chip monitors and controls balancing thresholds (trigger >0.1 V, stop ≤0.03 V). Interface: board/module designed for connection within a protected lithium battery pack (requires protection board). Reliability: automatic on/off behavior limits unnecessary balancing when cells are already balanced. Typical applications Balancing series-connected lithium battery packs used in electric bicycles, scooters, and other small electric vehicles (when used with the pack’s lithium battery protection board). DIY and assembly-line battery pack builds where adjacent-cell equalization is required as part of the pack’s protection and management strategy. Portable power stations and backup battery modules that use a protection board and need passive cell balancing to maintain pack consistency. Installation notes Must be connected through the lithium battery protection board—do not attempt to connect the board directly to the battery pack without the protection board. Verify compatibility and wiring sequence with the battery pack and protection board documentation before installation. This module provides a targeted, automatic solution for reducing adjacent-cell voltage imbalance in lithium battery packs when used as part of a proper protection and management system.