Tongwei Solar Panels 645W 660W 670W 264 Cells
Model: TWMNH-66QD
Cell: TNC 3.0, 264 cells (6 × 44)
Power Range: 645-670W
Glass: Dual glass, 2.0 mm front + 2.0 mm rear
Module Efficiency: 23.9%-24.8% (STC)
Warranty: 12-year material and workmanship; 30-year linear power output
Packaging: 36 pcs/pallet; 720 pcs/40′ HC
Tongwei TWMNH-66QD Solar Panels 645-670W DatasheetDescription
Tongwei TWMNH-66QD solar panels combine TNC 3.0 N-type technology, 264 cells and dual-glass construction for C&I rooftops and utility-scale PV plants. The series covers 645W to 670W, including 645W, 660W and 670W options, with module efficiency from 23.9% to 24.8% under STC.
The bifacial design has a Pmax bifaciality coefficient of 85 ± 5%, while the Pmax temperature coefficient is -0.26%/°C. Each module measures 2382 × 1134 × 30 mm and weighs 32.7 kg. Tongwei lists a 12-year material and workmanship warranty and a 30-year linear power output warranty. Ask PP for availability and pallet pricing for your project anytime.
- Specifications STC
- Mechanical Data
| Parameter | 645W | 650W | 655W | 660W | 665W | 670W |
|---|---|---|---|---|---|---|
| Maximum Power (Pmax) [W] | 645 | 650 | 655 | 660 | 665 | 670 |
| Open-Circuit Voltage (Voc) [V] | 50.06 | 50.19 | 50.36 | 50.52 | 50.67 | 50.84 |
| Short-Circuit Current (Isc) [A] | 16.28 | 16.36 | 16.43 | 16.50 | 16.57 | 16.64 |
| Voltage at Maximum Power (Vmp) [V] | 41.65 | 41.81 | 41.95 | 42.10 | 42.25 | 42.42 |
| Current at Maximum Power (Imp) [A] | 15.49 | 15.55 | 15.62 | 15.68 | 15.74 | 15.80 |
| Module Efficiency [ % ] | 23.9 | 24.1 | 24.2 | 24.4 | 24.6 | 24.8 |
STC: irradiance 1,000 W/m², cell temperature 25°C, AM 1.5. Power measurement tolerance: ±3%. These electrical parameters are for module grading, not individual modules. Source: Tongwei TWMNH-66QD datasheet, Ver.20260622.
| Specification | Details |
|---|---|
| Cell Type | TNC |
| Cell Orientation | 264 (6 × 44) |
| Dimensions | 2382 ± 2 × 1134 ± 2 × 30 mm |
| Weight | 32.7 kg |
| Front Glass | 2.0 mm AR-coated semi-tempered glass |
| Rear Glass | 2.0 mm semi-tempered glass |
| Frame | Anodized aluminum alloy frame |
| Junction Box | IP68, 3 diodes |
| Cable | 4.0 mm² |
| Cable Length | +400 mm / -600 mm or ±1,400 mm; length customizable |
| Maximum Static Test Load | 5,400 Pa (positive) / 2,400 Pa (negative) |
| Packaging (per pallet) | 36 pcs |
| Packaging (per 40′ HC) | 720 pcs |
