Features 1Smart Charge Maintenance: Solar panels have a built in smart MPPT charge controller that produces at least 1020% more power than conventional controllers. 2Solar Battery Charger: Solar panels convert sunlight into electricity which is energy saving environmentally friendly and pollution free. 3High Conversion Rate: Made of monocrystalline silicon and ETFE material these solar panels offer higher conversion efficiency and lower losses compared to polycrystalline silicon. 4Comprehensive Protection: The solar panel can prevent battery overcharge overvoltage discharge short circuit with reverse polarity protection and waterproof. 5Automatic Charging: The solar panel can automatically charge during the day and automatically shut down at night without consuming battery power increasing charging efficiency by 20%30%. Specification Item Type: Solar Battery ChargerMaterial: Monocrystalline silicon ETFEPower: 30WDC Port: DC 12VUSB Port: DC 5V TYPE C Port: DC 5VSolar Panel Size (L x W): Approx. 420 x 270mm / 16.5 x 10.6inWaterproof Rating: IP67 Package List 1 xSolar Battery Charger1 x Battery Connecting Cable1 xCar Charger Cable4 x Sucker1 x Instruction Note Manual measurement the size may have errors