Electrical characteristics Maximum power [pmax]5w5% Maximum power voltage [vmp]18v3% Maximum power current [imp]0.27a3% Short-circuit current [isc]0.30a3% Open-circuit voltage [voc]21.6v3% Current temperature coefficient0.08%/c Voltage temperature coefficient- 0.32%/c Power temperature coefficient-0.38%/c Maximum system voltage1000v Under standard test conditions(stc): irradiance of 1000w/m2, am1.5 and 25¡æ cell temperature Mechanical characteristics Dimensionsº274mm(l) x 185mm(w) x18mm(h) Weight: 0.5kg Solar cells: polycrystalline solar cells, 36cells in 2x18matrix connected in series Construction: front: high-transmission 3.2mm tempered glassencapsulate: evaback: tpt Frame: clear anodized aluminum alloy color: silver Module warranty: 25-year limited warranty of 80% power output10-year limited warranty of 90% power output5-year limited warranty of materials and workmanship. Carton/pallet