... carry. Suitable for outdoor travel, camping, cell phone, digital products charging, to charge the battery, etc.2.The portable folding solar ... Voltage (Voc): 21.609. Solar cell: monocrystalline Remark: the above data under standard testing conditions(STC): 1000W/m2, AM1.5, 25 ... solar folding panel, solar panel, with solar regulator, for battery charging