Model:SFM-80 Nominal peak power(WP) 80W Nominal voltage(Vmp):17.2V Nominal current(lmp):4.65A Open circuit voltage(Voc):21.6V Short circuit current(lsc):5.14A Cell efficiency:14.2% Module size: 1190*540*35mm Minimum power tolerance+/-5% Cell per module 125*125mm cells Noct 45+/-2 Voltage temperature efficient -0.33%/ Current temperature coefficient+0.05%/ Power temperature coeffcient -0.23%/ Payment: 30%deposit,before shipment should received the balance.