--- title: "Twinsel Electronic Technology TSM132-8-675-700BHDG (685W variant) 685W Solar Panel - Specs & Review | ComparePV" description: "Twinsel Electronic Technology TSM132-8-675-700BHDG (685W variant) 685W solar panel. Specs: 22.20% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-685w-variant" updated: 2026-09-11 --- # Twinsel Electronic Technology TSM132-8-675-700BHDG (685W variant) Solid all-round for its segment 61 panels in the segment HJT 650-700 W ## Identity - **Manufacturer:** Twinsel Electronic Technology - **Model:** TSM132-8-675-700BHDG (685W variant) - **Series:** 210 Heterojunction Module (HJT) - **Rated power:** 685 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 650-700 W (61 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 685 W | 690 W | Typical | | | Module efficiency | 22.20% | 22.20% | Typical | 5,817 | | Power density | 220.5 | 222.1 | Typical | 6,208 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 38.5 kg | 38.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.20% | 22.20% | Typical | 5,817 | | Power density | 220.5 | 222.1 | Typical | 6,208 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 56.2 | 55.7 | Typical | 10,487 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial, utility-scale, hot-climate and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 685 W - **Efficiency:** 22.20 % - **Voltage at Pmax (Vmp):** 41.56 V - **Current at Pmax (Imp):** 16.51 A - **Open-circuit voltage (Voc):** 49.56 V - **Short-circuit current (Isc):** 17.56 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.047 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 38.5 kg - **Area:** 3.11 m2 - **Power density:** 220.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.8 % - **Output after 30 years:** 622 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5817 of 14005 | | Power density | 6208 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 10487 of 14005 | | Warranty | 21 of 14005 | ## About this series The Twinsel Electronic Technology 210 Heterojunction Module (HJT) series is designed to maximize energy yield under real-world operating conditions - not just in a laboratory setting. The use of HJT cells based on n-type and layered passivation structures results in **high efficiency and stable performance**, even under varying solar irradiance. These modules are distinguished by **excellent performance at high temperatures**, which helps to reduce power drops in summer and on roofs with poor ventilation. The bifacial design and half-cut cell configuration support **better utilization of reflected and diffuse light**, which is particularly important on bright roofs, ground-mounted installations, and carport structures. Another key advantage is **resistance to PID (Potential Induced Degradation) and microcracks**, which increases predictability over the long term. This solution is for investors who want higher power density on a limited surface area, and a technology that is clearly more advanced than traditional PERC modules. ## Notable figures - At 22.2% efficiency, this panel is on par with typical \*\*HJT 650-700W\*\* modules - Power density of 220.5 W/m² matches the \*\*HJT 650-700W\*\* median - Temperature coefficient of -0.24%/°C matches the \*\*HJT 650-700W\*\* median - Bifacial design (85% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof - Ranked #5817 out of 14005 panels for efficiency in the database ## Questions ### What is HJT technology and how does it differ from classic PERC panels? HJT (Heterojunction Technology) combines an n-type silicon cell with thin layers of amorphous silicon, reducing recombination losses and increasing efficiency compared to PERC panels. In the Twinsel Electronic Technology 210 HJT series, this translates into higher efficiency, a smaller power drop at high temperatures, and more stable output under variable irradiance. For investors, this means higher power density on the same roof area than with classic PERC modules. ### Does the bifacial design of Twinsel 210 HJT panels make sense on a pitched roof? Yes, although bifacial technology delivers the biggest gains in ground-mount, carport, or flat, bright-roof installations where reflected light reaches the rear side of the module. On a typical pitched roof the panel still benefits from diffuse irradiance, but the energy gain will be smaller than with elevated mounting above the ground. The half-cut cell layout also improves performance under partial shading, regardless of roof angle. ### What warranty applies to the Twinsel 210 Heterojunction Module (HJT) series? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year power warranty guaranteeing a defined output level over the long term. This matches leading HJT solutions on the market and is notably longer than the typical 10-12 year product warranty found on many PERC modules, improving the predictability of the investment payback. ### Do Twinsel HJT panels perform well in high summer temperatures? Yes, heterojunction (HJT) cells inherently have a lower power temperature coefficient than PERC cells, so they lose less output as module temperature rises. In the 210 HJT series this results in more stable energy production on hot days and on roofs with limited ventilation, where panel temperatures tend to run higher than in ground-mounted systems. ### Is Twinsel Electronic Technology a Tier 1 manufacturer? No, Twinsel Electronic Technology does not currently appear on the BloombergNEF Tier 1 manufacturer list. This does not indicate lower module quality - the Tier 1 classification is based mainly on the scale of bank financing rather than technical parameters. Before purchasing, it's still worth checking current certifications (IEC, TÜV) and warranty terms, which for this series are set at 12 years product and 30 years power. ### What is the maximum power output of the Twinsel 210 HJT series, and who is it best suited for? Modules in this series reach a maximum power output of up to 700 Wp, placing them among the most powerful panels currently available on the market. This solution suits investors who want higher power density on limited roof or ground area, for example in commercial installations and solar farms, while also seeking more modern technology than classic PERC modules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/TSM132-8-675-700BHDG-ca580298ecc0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -35 W, lighter, +3.0 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Hotter, lighter, +3.0 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Hotter, lighter, +2.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | -40 W, lighter, +2.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Hotter, lighter, +2.8 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Hotter, lighter, +2.7 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Hotter, lighter, +2.6 pp | | [Twinsel Electronic Technology TSM132-8-675-700BHDG (675W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-675w-variant) | 675 W | -10 W, -0.3 pp | | [Twinsel Electronic Technology TSM132-8-675-700BHDG (680W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-680w-variant) | 680 W | Very close match | | [Twinsel Electronic Technology TSM132-8-675-700BHDG (690W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-690w-variant) | 690 W | Very close match | | [Twinsel Electronic Technology TSM132-8-675-700BHDG (695W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-695w-variant) | 695 W | +10 W | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +120 W, hotter, +2.9 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +115 W, hotter, +2.7 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +110 W, hotter, +2.6 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +105 W, hotter, +2.4 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +75 W, hotter, +2.3 pp | --- Source: https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-685w-variant Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.