Power from both faces
The rear side works at 85% of the front's output, turning light reflected off the surface below into extra kilowatt-hours.

Solar PanelsModel JKM660N-66QL6-BDX-SafetyKing-F2
A dual-glass N-Type Bifacial 660 W SafetyKing that harvests light on both faces, so every row of the array turns more of the day into usable power.
What sets the JKM660N-66QL6-BDX-SafetyKing-F2 apart from the other 5 models in the family: Maximum Power - Pmax 660 W; Maximum Power Voltage - Vmp 42.78 V; Maximum Power Current - Imp 15.43 A; Short-circuit Current - Isc 16.14 A; Open-circuit Voltage - Voc 50.50 V; Module Efficiency STC 24.43 %; Specifications (STC) Maximum Power - Pmax 660.
In stock
The rear side works at 85% of the front's output, turning light reflected off the surface below into extra kilowatt-hours.
Output falls only 0.26% per degree above test temperature, and the module is rated to run from -40 to +70 degrees.
Carries a Class A IEC fire type test report, the highest rating the standard awards.
Tested against 55 mm hailstones and certified to 7000 Pa of front-side and 5000 Pa of rear-side load.
Built on Jinko's N-type TOPCon cells and sealed between two 2.5 mm sheets of glass, this bifacial module also collects the light bouncing off the ground or roof beneath it, adding roughly a tenth again to what the front face alone delivers. It belongs on ground-mounted plants, carports and flat commercial roofs where that reflected light is real. A Class A fire rating, 55 mm hail testing and 7000 Pa front-load certification keep it earning through weather that stops lesser panels. This model: Module Efficiency 24.43%, Maximum Power (Pmax) 660W.
Specifications last updated 20 August 2026
| Cell Type | N- type Mono-crystalline |
|---|---|
| Dimensions | 2382×1134×30 mm |
| Weight | 40.5 kg |
| Front Glass | 2.5 mm, Anti-reflection Coating |
| Back Glass | 2.5 mm, Heat Strengthened Glass |
| Frame | Anodized Aluminium Alloy |
| Junction Box | IP68 Rated |
| Connector Type | JK03M / JK03M2 / Others* |
| Pallet Dimensions | 2442×1140×1251mm |
| Specifications (STC) Maximum Power - Pmax | 660 |
| Power Measurement Tolerance | 3% |
|---|---|
| Temperature Coefficient of Voc | -0.24 %/°C |
| Temperature Coefficient of Isc | 0.046 %/°C |
| Power Sorting | 0 ~ +3 % |
| Bifacial Factor | 85 ± 5% |
| Temperature Coefficient of Pmax | -0.26 %/°C |
| No. of Cells | 264 (66×4) |
| Maximum Series Fuse Rating | 35 A |
| Output Cables (Including Connector) | ≥4.0 mm2 (+): 500 mm , (-): 400 mm or Customized Length |
| Maximum Power - Pmax | 660 W |
|---|---|
| Maximum Power Voltage - Vmp | 42.78 V |
| Maximum Power Current - Imp | 15.43 A |
| Short-circuit Current - Isc | 16.14 A |
| Open-circuit Voltage - Voc | 50.50 V |
| Module Efficiency STC | 24.43 % |
| Protection Class | Class II |
|---|---|
| IEC Fire Type | Class A |
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the maximum power (Pmax) is 660 W, the module efficiency STC is 24.43%, the specifications (STC) maximum power (Pmax) are 660, the power measurement tolerance is 3% and the power sorting is 0 ~ +3 %.
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the maximum power voltage (Vmp) is 42.78 V, the maximum power current (Imp) is 15.43 A, the short-circuit current (Isc) is 16.14 A and the open-circuit voltage (Voc) is 50.50 V.
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the temperature coefficient of Voc is -0.24 %/°C, the temperature coefficient of Isc is 0.046 %/°C and the temperature coefficient of Pmax is -0.26 %/°C.
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the maximum series fuse rating is 35 A, the protection class is Class II and the IEC fire type is Class A.
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the cell type is N- type mono-crystalline, the dimensions are 2382×1134×30 mm, the weight is 40.5 kg and the number of cells is 264 (66×4).
On the Jinko JKM660N-66QL6-BDX-SafetyKing-F2 solar panel, the front glass is 2.5 mm, Anti-reflection coating, the back glass is 2.5 mm, heat strengthened glass, the frame is anodized aluminium alloy, the junction box is IP68 rated and the connector type is JK03M / JK03M2 / others*.