a. 25-year output power warramty b. ISO9001:2000 certified factory c.solar panel,pv panel,solar module Solar panel,pv panel,solar modulePeak power: 5W;Nominal current: 10.3A;Nominal voltage: 16.8V;Open circuit voltage: 21.0V;Short circuit current: 0.34A;Dimensious: 246X214X25mm;Weight: 1Kg;Operating Temperature:-40 to +85oC;Module effciency: 10%;Maximum System Voltage: 1000VDC;