Features 1.High conversion rate up to 18% helps save power to a great extent. 2.Highly transparent glasses achieve a super high light transmittance up to 93% to get more solar power. 3.High water resistance level makes the solar board very waterproof. 4.9V 3W power makes it very practical. 5.Multi-level protection ensures the safety of solar panel battery charging. Specification Description: This solar board offers a more convenient charging mode. High water resistance level makes it highly waterproof. Furthermore, the efficient and transpsrent glass comes with a high light transmittance up to 93% to get more solar power. And high conversion rate up to 18% makes the poly silicon solar cell more efficient. Features: High conversion rate up to 18% helps save power to a great extent. Highly transparent glasses achieve a super high light transmittance up to 93% to get more solar power. High water resistance level makes the solar board very waterproof. 9V 3W power makes it very practical. Multi-level protection ensures the safety of solar panel battery charging. Specifications: Product type: Poly Silicon Solar Cell Material: Polysilicon Voltage: 9V Power: 3W IMP( mA): 333 Conversion rate: 18% Light transmittance: 93% Waterproof: Support Package size: approx. 23.5 * 15 * 3 cm/ 9.25 * 5.91 * 1.18 in Applicable Battery: can be used for 5-6V battery charging Package weight: 412g Package List: 1 * Solar Board Package List