Panel Solar 9V 3W Solar Board Waterproof 93% Light Transmittance Poly Silicon Solar Cell for Battery Charging Boat 9V 3W power makes it very practical. High water makes the solar board very waterproof. Highly transparent glasses achieve a super high light transmittance up to 93% to get more solar power. Description: This solar board offers a more convenient charging mode. High water 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. 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 Package weight: 412g Package List: 1 * Solar Board