The 18W Solar Power Starter Kit charge with DC 5V/12V output and IP65 water resistance. The Starter Kit is great for off-grid applications, such as RVs, trailers, boats, sheds, and cabins. With a controller to control the batterys voltage and turn on the circuit. Adding a polycrystalline or monocrystalline solar panel kit can extend your travels further than ever before. Specifications: Types: 4 types (optional) type 1: 18W solar panel single USB port #43; controller type 2: 18W solar panel single USB port type 3: 18W solar panel Dual USB port #43; controller type 4: 18W solar panel Dual USB port Material: PET Color: black white Panel: monocrystalline solar panel Powers: 18W (max.) DC Output: 12V USB Output: 5V Transformation efficiency: 20% Proof rate: IP65 Item weight: 452g / 15.9 oz Panel size: 420 * 280mm / 16.54 * 11.02in Controller Material: ABS Color: black blue voltage: 12V/24V/48V (auto) Charging Current: 10-100A Output Current: 10-100A Max Solar input: #xff1c;50V Floating charge voltage: 13.7V (defaul, adjustable) Discharge stop voltage: 10.7V (defaul, adjustable) Discharge reconnect voltage: 12.6V (defaul, adjustable) USB output: 5V USB ports Operating temperature: -35 to 60 Item weight: 128g / 4.52oz Item size: 133 * 70 * 31mm / 5.5 * 2.76 * 1.22in Package Infor. Package with contoller weight: 648g / 22.9oz Package without contoller weight: 530g / 18.7oz Package size: 440 * 295 * 40mm / 17.3 * 11.6 * 1.6in Package List: 1 * Solar Panel 1 * Car Charge Cable 1 * Cable with Clip 1 * DC Charging Cable 1 * DC Charging Cable Adapter