... travel, camping, cell phone, digital products charging, to charge the battery, etc.2.The portable folding solar panel, voltage is 18V ... , provide with 12V charge of storage battery, to protect the battery from damage. Technical parameter:1. Size: 575*450 ... .609. Solar cell: monocrystalline Remark: the above data under standard testing conditions(STC): 1000W/m2, AM1.5, 25°C 60w solar ...