Item Type: Solar Panel Kit Material: Monocrystalline Silicon Product Size: Approx. 420x370mm / 16.5x14.6in (Solar Panel) Weight: Approx. 839g / 29.6oz Controller Voltage: 12V/24V (Automatic Identification) Standby Current: 2. The product does not have a power storage function 3. Please allow some errors due to manual measurement. 1WITH 100A CONTROLLER: 100A controller adopts industrial grade main control chip, large screen LCD display, and adjustable charging and discharging parameters. 2FOLDABLE AND LIGHTWEIGHT: Solar panel is made of environmentally friendly and durable materials, foldable, lightweight, with carabiner, making it folds firmly. 3STABLE OUTPUT: Solar charger with controller produces stable output even on cloudy days, suitable for outdoor activities, outdoor work or emergencies. 100W Photovoltaic. 4CIRCUIT PROTECTION: 20W solar board has built in overcurrent and short circuit protection, open circuit protection, and reverse polarity protection, all of which are self recovery and do not damage the controller. 5PRODUCT USE: Solar panel kit has dual MOS anti backflow circuit, ultra low heat generation. 20W maximum power. It can be used for mobile phone, outdoor car, ship charging, etc.