Product Description Product Overview: 1. Function: 4.2V balancing 2. Working current: 68mA 3.Application: For balancing voltage and current Connection introduction: 1.B6+: Connect with battery positive 2.B5+: Connect to the connection point between battery 5 and battery 6 3.B4+: connect to the connection point between battery 4 and battery 5 4.B3+: connect to the connection point between battery 3 and battery 4 5.B2+: connect to connection point between battery 2 and battery 3 6.B-: connect to battery negative Note: 1. This balance board is applied to lithium battery to add charging and balance function so that it can charge each battery until fully charged 2. This balance board does not have charge/discharge protection function, so it cannot replace the protection board. At the end of the charging process, it will discharge the battery for fully charged ones; Which is called balancing function Wish you a happy shopping