Specifications: 1) Max. power: 3W 2) Max. power voltage: 9V 3) Max. power current: 0.33A 4) Open circuit voltage: 10.8V 5) Short circuit current: 0.36A 6) Number of cells: 187) Weight per piece: 0.5kg 8) Conversion efficiency: 15% 9) Output tolerance:+/-10% 10) Dimensions of module: 260 *154*18mm producing area:China