... ,SP20-12 Solar Module & Mounting structure 2,EWS17-12 Solar Battery 3,Solsum 6.6B Charge Controller Configuration Model Item EW ... -SHS20WSolar Module & Mounting structure SP20-12Maximum power 20 WpSolar Battery EWS17-12Type Lead-acid, free maintenanceVoltage12VCapacity17AHCharge ControllerSolsum 6.6BVoltage 12VRated Current6AControl Box Power ...