Features 1、High Conversion Efficiency: Solar panels have high conversion efficiency, good output efficiency, low light efficiency, light weight, easy portability and strong applicability. 2、Polysilicon Material: Solar panel charger adopts polysilicon material, which has good light transmission and sealing, simple operation and easy to use. 3、Rechargeable 3.7V battery: Solar panel charger can charge 3.7V battery, 0-330MA working current, it is a special board for solar lights, without power storage function. 4、Scope of Application: Solar panel charger is used for battery charging, home lighting, various low power electrical appliances, scientific research projects, solar water pumps, small solar power generation systems, etc. 5、Lightweight and Portable: Solar panels are small and lightweight, lightweight, compact, stylish and sturdy, beautiful shell, easy to carry and use. Specifications Item Type: Solar Panels Material: Polysilicon Weight: Approx. 130g / 4.6oz Size: Approx. 13.5 x 11cm / 5.3 x 4.3in Working Current: 0-330MA Short Circuit Current: 400MA Working Voltage: 6V Short Circuit Voltage: 7.5V Scope of Use: Special Board for Solar Lights Function: Rechargeable 3.7V Battery Features: No Power Storage Function Package List 2 x Solar Panels