Note: The appearance and color of different product batches may vary, but this does not affect use. Balancing principle: This balances voltage differences between adjacent cells. If the voltage difference between neighboring cells reaches 0.1 V or more, the chip starts balancing work until the difference is within 0.03 V, at which point balancing stops. Inductive energy-transfer balance board: High-current 1.2 A energy-transfer battery voltage balancer. It significantly equalizes battery voltages and improves the overall efficiency of the battery pack. Balancing indicators and operation: 1. When the balancing light is on, balancing is active. 2. When the balancing light is off, the balancing circuit is in standby. 3. When the balancing light blinks, it indicates a disconnection or circuit fault. Use scenarios: - In multi-cell battery packs for solar storage or backup power, to maintain balanced cell voltages and improve pack life. - In DIY hobby projects and modular packs with several cells in series, to ensure safe and uniform voltages. - In small electric tool packs or modular battery modules where consistent performance across cells is required.