Description: Highly efficient solar cells convert to solar power into free electric energy. Multi-functional solar panel can charge your 3.7V battery, garden light or other electronic devices. Safe, reliable, and energy-saving monocrystalline silicon solar cell can give you a wonderful new charging experience. Features: [Eco-friendly]A solar panel will lower the costs on your power bill and help curb your carbon emissions. [High Conversion Efficiency]Highly efficient solar cells convert up to 19.5% of solar power into free electric energy. [Useful]Polycrystalline silicon panels with DC output have the highest energy efficiency and are space efficient for the power they output. [IP65 Water-proof Solar Panel]Environmental and water-proof solar panel with long lasting material provides long lifespan. [Widely Applicable]Widely used in rural roads, residential roads, sidewalks, industrial parks, landscape lighting, scenic spots, parks, gardens, streets, squares, etc. Specifications: Material: Polycrystalline Silicon Color: Black Peak power: 2W Working voltage: 5V(Can be used to charge 3.7V battery) Output current: 0-800mA DC Port: 5521 Operating temperature: 0 to +60 Process: EVA lamination Application: Lamp, Fan, Pump, etc Occasion: Outdoor, Camping, Garden, etc Cable Length: 300cm / 9.84ft Product Size: 17.3*9.9cm / 6.81*3.89inch Package Size: 15*18*2.5cm / 5.9*7.08*0.98inch Package Weight: 111g / 0.24lb Package List: 1 * Solar Panel