-Maximum Power:20W
-Tolerance:±5%
-Maximum Voltage:18V
-Maximum current:1.12A
-Open circuit  voltage:21.60V
-Short circuit current:1.22A
-Unfolded Dimension:335*670*7mm
-Folded Dimension:335*170*30mm
-Weight:1.11kg
-Maximum system voltage:600V
-Products Warranty:With 15 years limited warranty on power output which power output more than 90% of the Minimum Peak Power as specified within 10 years from date of delivery and power ourput more than 80% of the Minimum Peak Power as specified within 15 years from the date of delivery,and 2 years warranty on workmanship.