SPECIFICATIO Module Type XRMB-645W-66-210 XRMB-650W-66-210 XRMB-655W-66-210 XRMB-660W-66-210 XRMB-665W-66-210 STC NMOT STC NMOT STC NMOT STC NMOT STC NMOT Maximum Power(Pmax) 645Wp 488Wp 650WP 491Wp 655Wp 495Wp 660Wp 499Wp 665Wp 503Wp Maximum Power Voltage (Vmp) 37.40V 34.89V 37.61V 35.08V 37.81V 35.26V 38.00V 35.45V 38.20V 35.64V Maximum Power Current (Imp) 17.25A 13.99A 17.29A 14.02A 17.33A 14.05A 17.37A 14.09A 17.41A 14.12A Open-circuit Voltage (Voc) 45.20V 42.58V 45.41V 42.77V 45.61V 42.96V 45.81V 43.13V 46.01V 43.33V Short-circuit Current (Isc) 18.17A 14.65A 18.21A 14.68A 18.26A 14.72A 18.31A 14.76A 18.36A 14.81A Module Efficiency STC (%) 20.76% 20.92% 21.09% 21.25% 21.41% Operating Temperature( ºC) -40ºC~+85ºC Maximum system voltage 1500VDC (IEC) Maximum series fuse rating 35A Power tolerance 0~+3% Temperature coefficients of Pmax -0.35% /ºC Temperature coefficients of Voc -0.28% /ºC Temperature coefficients of Isc 0.048% /ºC Nominal operating cell temperature (NOCT) 45±2ºC Refer. Bifacial Factor 70±5% Our Advantage FAQ 1.Quickly delivery: 7-9 Days 2.Small orders accept: 1 Pallet is OK 3.Good quality and competitive price We choose materials with strict standards, choose A grade cells & Our products are produced by automated equipments & Each process is tested appearance. 4.Warranty: 30 years power output warranty , 15 years manufacturing warranty. 5. We produce panels customized .