Solar Charger, Vinsic&reg; 12W High Efficiency Solar Panel Foldable and Portable Solar Charger (Black) High Efficiency: 12W high-efficiency Solar Charger provides up to 23.5%-25% conversion efficiency, while the monocrystalline panel conversion efficiency is only 15%. Intelligently Identify: Under direct sunlight, the maximum current can reach to 1.8A. It greatly improves the charging efficiency. No additional battery needed for charging external devices, 100% green energy with zero carbon footprint. Industrial-strength PET plastic faced solar panels sewn into high-wear polyester canvas for weather-resistant outdoor durability. Perfect for rapidly charging Smartphones, Tablets, MP3 Players , GPS Units and more while emergency preparedness, Camping, Hiking , Backpacking and other Outdoor Activities.