Instapark PowerBox Mars100 Fold-n-Go Portable 100-Watt Solar-powered 12V Battery Charger with Power Dome EX 400-Watt Jump Starter with Built-In Air Compressor Powerful 100 watts high-efficiency mono-crystalline solar panel with foldable design, ideal for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell) Stylish, foldable & self-contained design with compact size and light weight, ideal for home use and outdoor activities Built-in controller prevents battery from being over-charged or over-discharged and built-in cooler fan with temperature sensor prevents overheating. Multi-functional 5-LED Charge / Battery Strength indicator Adjustable steel flip stand for maximum sunlight exposure