Inductive active balance board: Automatic start for more carefree Zero loss of energy transfer Compact layout for greater portability Low heat generation during balance All day uninterrupted voltage detection. Repair battery pack voltage - restore battery pack capacity - extend battery pack life. Balance principle: This module is fully automatic detection of adjacent neighboring cell's voltage difference to achieve balance, when the adjacent neighboring cell's voltage difference 0.1V, it will automatically trigger the balancer to work: until the adjacent neighboring cell's voltage difference 0.03V, the balance ends. Balance current: balance current 0.5A-0.7A when 0.2V0.1V ; Equalization current when adjacent neighboring cells' voltage difference Greater than 0.2V: 1A balance current ; Sleeping current: 10uA for battery: li-ion /lipo/lifepo4 3.0V-4.2V per cell . Voltage balance accuracy:30mV difference between adjacent voltages (typical value) LED on: in balancing LED off: balance finished LED blinking: drop wires indication/circuit fault Sleeping current 10uA Operating temperature -20-+60 Colour:As Shown Material:plastic Package Contents: 1 * current balance module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.