We will try our best to resolve the issues. Please give us the opportunity to resolve any problem. Brand new and high quality. With a semi-flexible design, you can bent the solar panel appropriately to suit a wider range of applications.The solar panels comes with high conversion rate, high stability and good durability. It has a single crystal R chip and can be used in any place and situation like automobiles, homes, boat, motorcycles, etc. With the strong sun in the summer, the solar panel can efficiently convert solar energy. Equipped with advanced polyethylene coating technology, the surface of the battery is plated with dark blue reflective film. The solar panels can withstand all kinds of environments with high waterproof performance. Anti-scratch, non-foaming, easy to clean. No-load voltage: 20.8V DC. Battery panel specification: high-efficiency monocrystalline board. Size: 11.3 x 11.3 inches. 1x cable (male and female).
1x Controller (Not included Batteries).