Instapark Mercury27 27-watt Compact Foldable Solar-powered Battery Charger with 12V Output for Instapark Mars20S, Powerpack Series & Wagan Power Dome Series and Dual USB Ports No additional battery needed for charging external devices, 100% green energy with zero carbon footprint, built-in dual USB ports for simultaneously charging two USB devices including but not limited to iPhones, iPads, Android smart phones, tablet computers, plus a 12V DC output for charging 12V batteries, power packs and alike, the 12V output plug is compatible with Instapark Mars20S, PowerPack Series & Wagan Power Dome Series Battery Packs, no additional adapter needed 4 Highest-efficiency polycrystalline panels fold up into a compact, portable and lightweight pack measuring 11.5 X 8 X 2 inches and weighing less than 3 lbs Charges a Powerpack 600 from 50% to 100% in 10 hours Made from scratch-resistant and weather-resistance fabric, ideal for outdoor use. Built-in pocket holds and protects charge controller and other electronic components and provides extra storage All-around portable solar battery charger powered by foldable 27 Watts high-efficiency polycrystalline solar panel with triple outputs including one DC 12V port and two standard DC 5V USB ports, ideal for RVs, emergency preparedness, backpacking, camping and other outdoor activities