Vmp:17.6v Voc:21.9v Isc:2.7a Imp:2.56a Max power:45w Monocrystalline silicon solar cells:156f¯52 mm No.Of cells and connections: 12(3f¯4) Dimension of module:537*665*30 Weight:4.5kg Operating temperature: -40 to 85 degree Power temperature coefficient: -0.45 (%/c) Current temperature coefficient: 0.05 (%/c) Voltage temperature coefficient: -0.35 (%/c) Noct-normal operating cell temperature: 48fa2 degree Warranty: 25 years Products have been certified by ce and ul. Foam/box/carton/pallet