Automatic idle function: When the voltage difference between two adjacent battery cells is less than 0.03 V, the balancer automatically enters idle mode. Intelligent cell balancing: The balancer uses controller-sensed voltage to determine the difference between cells and the cells being balanced, effectively reducing inter-cell disparities. High accuracy: Balancing voltage accuracy is within 30 mV. The energy transfer is precise and stable, powered by an exclusive balancing IC. Clear running status: The status LED indicates operating state. On means the balancer is active; off means the balancing circuit is inactive; a blinking LED indicates power loss or circuit fault. Use scenarios: - Balance and maintain multi-cell Li-ion packs in consumer electronics, electric bicycles, scooters, or power tools to improve performance and longevity. - Apply in solar or other multi-cell energy storage systems to keep cell voltages in sync during charging and discharging. - Use during new-pack setup or routine maintenance to equalize cell voltages and restore balanced operation.