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. Features: Bill Free Solar Panel Kit --- Monocrystalline solar panel and environmental PET film, safe to use with long service life. Environmental protection solar energy, bill-free and user-friendly. Portable Design --- Small in size and light to take, it is easy to carry for camping or other outdoor activities. Easy to install with pre-drilled holes on the back of panels for fast mounting and securing. Plug and Play --- Built USB port in the solar panel, come with 4 kinds charing cable, fit most kinds of device, plug and play, avoide out unexpected off power. Waterproof --- Advanced water and dust proof level, complete protection against environmental particles and low pressure water jets. Wide Application --- Widely applied to off grid 5/12 Volt battery charging system and a variety of DC applications, including caravan, RV, car, boat, green house, marine, dry camping, garden watering, shed, cabin, gate opener, etc. Specifications: Types: 4 types (optional) type 1: 18W solar panel single USB port+ controller type 2: 18W solar panel single USB port type 3: 18W solar panel Dual USB port type 4: 18W solar panel Dual USB port + controller 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: ＜50V Float