Maxmium Power ( Pm) 220W Solar cell: Polycrystalline 156 Cells: 60 pcs ( 6* 10) Power tolerance 3% Open-circuit voltage ( Voc) 36.3V Voltage at Pmax ( Vmp) 29V Short-circuit current ( lsc) 8.1A Current at Pmax ( lmp) 7.58A Dimension of module ( mm) 1640x992x50MM Weight: 20KG