Bifacial Solar Panel | 685Wp | 39.80V | 22.10% | 2384x1303x33/35 mm | 40HQ: 594 / 558 Pieces
GRANKIA GT685W-132M high efficiency topcon bifacial solar module 685w is optimized for both residential and commercial solar applications, providing superior energy generation and long-term reliability.
The bifacial solar module 685w employs advanced Topcon technology to maximize light absorption and improve conversion efficiency. With an impressive efficiency rating of up to 22.10%, it offers one of the highest levels of energy conversion on the market today.
Thanks to its bifacial design, the TOPCon solar module 685w can capture sunlight from both the front and rear sides of the module. This allows the panel to generate additional power by utilizing reflected light from the ground, increasing the overall energy yield by up to 25% in optimal conditions.

High Output Stability
The bifacial solar module’s design ensures consistent output over time, minimizing the degradation rate. With a low degradation rate of less than 0.45% per year, users can expect stable power generation and dependable performance throughout its operational lifetime.
Excellent Temperature Coefficient
The topcon bifacial solar module 685w has an outstanding temperature coefficient, ensuring that it maintains high efficiency and output even in high-temperature environments. This characteristic makes it particularly well-suited for hot climates or locations with high solar radiation.
Low Light Performance
These solar panels are engineered to perform exceptionally well in low-light conditions, such as cloudy days or early mornings. This capability ensures that homeowners can still generate electricity even when sunlight is not at its peak.
PID Resistance
The bifacial solar module can be resistant to Potential Induced Degradation (PID), a common issue that can affect solar panel performance over time. This resistance helps maintain the panel’s efficiency and longevity, ensuring reliable energy output throughout its lifespan.
Improved Shading Tolerance
The bifacial nature of the module not only increases energy generation from reflected light but also enhances shading tolerance. The monocrystalline photovoltaic module performs better than traditional mono-facial modules in partially shaded environments, helping to minimize the loss of energy production.
| Model No. | GT685W-132M |
| Warranty | |
| Product Warranty | 12 Years |
| Power Warranty | 30 Years warranty for Extra Linear Power Output |
| Electrical Data at STC | |
| Maximum Power (Pmax) | 685Wp |
| Voltage at Pmax (Vmpp) | 39.80V |
| Current at Pmax (Impp) | 17.21A |
| Open Circuit Voltage (Voc) | 47.70V |
| Short Circuit Current (Isc) | 18.21A |
| Panel Efficiency | 22.10% |
| Power Tolerance | 0 ~ +5W |
| Standard Test Conditions (STC): air mass AM 1.5, irradiance 1000W/m2, cell temperature 25°C Bifacial NamePlate Irradiance (BNPI): front 1000W/m2, rear 135W/m2, AM 1.5, cell temperature 25°C |
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| Thermal Ratings | |
| Operating Temperature Range | -40 °C ~ 85 °C |
| Temperature Coefficient of Pmax | -0.24 %/°C |
| Temperature Coefficient of Voc | -0.22 %/°C |
| Temperature Coefficient of Isc | 0.047 %/°C |
| Maximum Ratings | |
| Maximum System Voltage | 1500VDC (IEC) |
| Maximum Series Fuse | 30A |
| Material Data | |
| Panel Dimension (H/W/D) | 2384x1303x33/35 mm |
| Weight | 38.0Kg |
| Cell Type | 210mm MBB N-TOPCon |
| Cell Number | 132Pcs (6x11x2) |
| Glass | 2.0mm, Tempered Glass |
| Frame Type | Anodized Aluminium Alloy, Silver Color |
| Junction Box | Potted, IP68, 1500VDC |
| Connector Type | MC4 Connectors |
| Cable | 4.0mm2, 300mm / Customized |
| Packing Information | |
| Quantity / Pallet | 33 Pieces / Pallet or 31 Pieces / Pallet |
| 40HQ Container Load | 594 Pieces / 558 Pieces |