550w solar panel cell type: mono no.of cells: 144 (6×24) peak power(pmax): 550w rated voltage (vmp/v): 41.65v rated current (lmp/a): 13.20a open circuit voltage(voc): 49.60v short circuit current(lsc): 13.84a module efficiency(%): 21.5% maximum system voltage (iec):1500v dc maximum series fuserating(a): 25a power tolerance (w): ±5% pmaxtemperature coefficients(w/°c): -0.36%/°c voc temperature coefficients(v/°c): -0.28%/°c isc temperaturecoefficients(a/°c): +0.05%/°c operating temperature(°c): -40~+85°c dimensions(mm): 2278*1134*35mm