... carry. Suitable for outdoor travel, camping, cell phone, digital products charging, to charge the battery, etc.2.The portable folding solar panel, voltage ... ): 3.3A8. Open Circuit Voltage (Voc): 21.609. Solar cell: monocrystalline Remark: the above data under standard testing conditions(STC ... ): 1000W/m2, AM1.5, 25°C 60w solar folding panel, solar panel, with solar regulator, for battery charging