Function: 1. Solar panel, suitable for small home projects, science projects, electronic applications and for charging small batteries. 2. It is a device that absorbs sunlight and converts it directly or indirectly into electricity through photoelectric or photochemical effects. 3. High-quality polysilicon material, safe and durable, with good weather resistance, able to withstand harsh weather conditions. 4. Suitable for home lighting and various low power appliances, solar toys, solar lamps, small solar systems etc. 5. The photoelectric conversion efficiency is up to 18 percent , low power consumption, and has no energy storage function. Specification: Item type: Solar panel Material: polysilicon Weight : Approx. 18g / 0.6oz Product Size: Approx. 45x25mm / 1.8x1.0in Power: 0.15 W Working Current: 125ma Working voltage: 1V Conversion Efficiency: 18 percent Function : without energy storage function Applications: Used for rechargeable batteries, home lighting and various low power appliances, scientific projects, solar water pumps, small solar power systems, etc. Package List: 4 x solar panel Note: 1. Thanks for your understanding.2. Put it under the sun to use