3.7v 8.4V 12.6V 1.5A Boost Converter Module BMS 15W Step Up Converter Board Support Fast Charge

Label:Yes Name:Lithium Battery Charging Boost Module Purpose: Lithium battery charging Color: Black Packing:1 pc Charging module(2s/3s) Size:3.1*1.7cm(1.22*0.67in) Power current: automatic boost Material:Polymer Power: maximum 15W

Note: Normal use does not require too many modules to be set, just select 2 or 3 strings for charging as required, unless you are special and familiar with the application.