1、WITH 100A CONTROLLER: 100A controller adopts industrial grade main control chip, large screen LCD display, and adjustable charging and discharging parameters.2、FOLDABLE AND LIGHTWEIGHT: Solar panel is made of environmentally friendly and durable materials, foldable, lightweight, with carabiner, making it folds firmly.3、STABLE OUTPUT: Solar charger with controller produces stable output even on cloudy days, suitable for outdoor activities, outdoor work or emergencies. 100W Photovoltaic.4、CIRCUIT 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.5、PRODUCT 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.