Product Description Product Overview: 1. Function: 4.2V balancing 2. Working current: 68mA 3. Size: 37*26*2.0mm 4. Function: Voltage and Current Balancing Soldering Point Introduction: 1.B7+: Connect with battery positive 2.B6+: Connect with joint between battery 6 and the battery 7 3.B5+: connect with joint between battery 5 and battery 6 4.B4+: connect with joint between battery 4 and battery 5 5.B3 +: connect with gasket between battery 3 and battery 4 6.B2 +: connect with gasket between battery 2 and battery 3 7.B1 +: connect with gasket between battery 1 and battery 2 8.B-: connect to battery negative Note: 1. This balance board can be applied for unbalanced charging function, lithium battery to increase function and allow all batteries to be fully charged at the same time. 2. This balancing board does not have charge and discharge protection function, and it cannot replace the protection board. When almost fully charged, discharge fully charged by resistance first, and works as shunt and balancing Wish you a happy shopping