Solar Panels - Solar Panel Solar Charger Panel 400mA Waterproof Multipurpose for Mobile Phone [Compact And Portable] 20W monocrystalline solar panel with small size and lightweight design, can be put in a small bag, does not take up space, convenient to carry. [Energy Saving] Portable solar panel can be placed in the sun to start using, the use of solar energy, environmental , energy saving, with strong applicability. [Use Range] 5V 20W solar panel, can cell phone and 3.7V‑5V battery, to meet your different use needs. 0‑1000mA working current, stable use, and [Applications] Suitable for various low power appliances, emergency lights, advertising lights, traffic lights, garden lights, street lights, electric fans, solar water pumps, solar street lights, small solar systems, etc. [USB Output] Solar panel with standard USB output port, suitable for hiking, camping, travel, can be used for solar chargers, generators, cell phones, power banks, etc.