1. This is the adjacent voltage difference compensation. When the voltage difference between adjacent batteries exceeds 0.1V, the chip internally triggers the compensation function until the adjacent battery voltage difference is within 0.03V, and it stops working during charging and discharging when there are neighboring voltage differences. 2. Inductive energy transfer balance card, a current 1.2A energy transfer battery voltage balancer, significantly balances battery voltage and improves the overall efficiency of the battery pack! 3. This board operates on the principle of adjacent compensation and cannot be used as a maintenance tool. It must be connected to the battery along with the lithium battery protection board. The voltage difference generated during charging and discharging triggers the balancing board to achieve energy transfer and balance. 4. By triggering the compensation function, the voltage error of the battery pack is corrected to an value, reducing battery maintenance costs. Working Voltage: 2.0V 4.5V.