--- title: "VSUN VSUN535-144BMH 535W Solar Panel - Specs & Review | ComparePV" description: "VSUN VSUN535-144BMH 535W solar panel. Specs: 20.71% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vsun-vsun535-144bmh" updated: 2026-09-11 --- # VSUN VSUN535-144BMH Strong in heat, no clear weak spot 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** VSUN - **Model:** VSUN535-144BMH - **Series:** VSUN 144BMH - **Rated power:** 535 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 535 W | 535 W | Typical | | | Module efficiency | 20.71% | 20.90% | Typical | 10,721 | | Power density | 207.1 | 209.0 | Typical | 10,764 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight (kg) | 28.8 kg | 28.4 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.71% | 20.90% | Typical | 10,721 | | Power density | 207.1 | 209.0 | Typical | 10,764 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight per kWp | 53.8 | 53.0 | Typical | 7,892 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.320 %/°C temperature coefficient** - Top 3% of the PERC 500-550 W segment, against a median of -0.350. Ranked 8,312th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 535 W - **Efficiency:** 20.71 % - **Voltage at Pmax (Vmp):** 41.50 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 49.50 V - **Short-circuit current (Isc):** 13.78 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.320 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.8 kg - **Area:** 2.58 m2 - **Power density:** 207.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 454 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10721 of 14005 | | Power density | 10764 of 14005 | | Temperature coefficient | 8312 of 14005 | | Weight | 7892 of 14005 | | Warranty | 21 of 14005 | ## About this series VSUN 144BMH panels are advanced modules based on **half-cut cell** technology, which significantly reduces energy losses resulting from internal resistance and improves efficiency during partial shading. Thanks to the use of a **multi-busbar** design, this series guarantees better current flow and higher resistance to micro-cracks, which directly translates into the longevity of the entire installation. The use of PERC technology allows for more efficient operation in low-light conditions, effectively solving the problem of low performance on cloudy days, so characteristic of the Polish climate. These solutions make VSUN 144BMH an ideal choice for **large-scale solar farms** and large commercial installations, where a quick return on investment and maximizing yields from every square meter of area are key. Importantly, this series stands out for its **increased resistance to potential-induced degradation** (PID), which ensures the stability of power parameters over many years of operation. Compared to standard modules, VSUN offers a more favorable temperature coefficient, allowing high efficiency to be maintained even during summer heat. It is a solid foundation for projects requiring uncompromising reliability and the highest mechanical resistance to harsh weather conditions. ## Notable figures - At 20.7% efficiency, this panel is on par with typical \*\*PERC 500-550W\*\* modules - At 207.1 W/m² power density, roof space requirements are typical for \*\*PERC 500-550W\*\* panels - Temperature coefficient of -0.32%/°C vs median -0.35%/°C means ~1% less power loss at 65°C - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof - #10721 for efficiency, #8312 for temperature performance out of 14005 panels ## Questions ### What is half-cut cell technology used in the VSUN 144BMH panels? Half-cut technology splits standard cells in half, so the current flowing through each half is lower, reducing resistive losses and heat buildup within the module. In the VSUN 144BMH series this is combined with a multi-busbar design that improves current flow and increases resistance to microcracks. The result is higher efficiency, better performance under partial shading, and longer panel lifespan in demanding operating conditions. ### Are VSUN 144BMH panels bifacial, and how much extra energy can they generate? Yes, the 144BMH series uses bifacial PERC cells with a bifaciality factor of around 70%, allowing the rear side to capture light reflected off the ground. Depending on the surrounding surface — white roofing membrane, gravel, snow, or light-colored ground — the extra yield from the back side can reach 4 to 10% of nominal power, making these panels an attractive choice for ground-mount installations and utility-scale farms. ### What warranty does VSUN offer on the 144BMH series panels? VSUN 144BMH panels come with a 25-year product warranty covering materials and workmanship, plus a 30-year linear power warranty guaranteeing that a high percentage of the initial output is maintained throughout the panel's lifetime. This is a long coverage period compared to many competing modules, translating into greater investment security and a more stable return from the PV installation. ### What type of installations are VSUN 144BMH panels best suited for — residential or commercial? With power output up to 550 Wp, PERC technology, half-cut cells, and enhanced PID resistance, VSUN 144BMH panels are primarily designed for utility-scale solar farms and large commercial installations, where maximizing energy yield per square meter and achieving a fast return on investment are key priorities. They can also work in larger residential systems, though their size and power output make them best suited for professional-scale projects. ### How do VSUN 144BMH panels perform in high summer temperatures? VSUN 144BMH panels have a favorable power temperature coefficient of around -0.32%/°C, meaning less output loss as temperatures rise compared to standard modules. PERC technology further supports stable cell performance at higher temperatures, so the panel maintains high efficiency even on hot summer days when module temperature on a roof can exceed 60°C (140°F). ### Is VSUN a Tier 1 manufacturer, and are its panels a reliable choice despite not having that status? VSUN does not currently hold Tier 1 status under the BNEF ranking, which mainly reflects a manufacturer's financial stability relevant to banks funding large projects rather than technical quality. The company is headquartered in Germany and backs its panels with a 25-year product warranty and a 30-year power warranty, which in practice signals confidence in the durability of its modules despite lacking formal Tier 1 classification. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/661e0d0f0523c-3c43bc2298ad.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +4.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.8 pp | | [VSUN VSUN540-144MH](https://comparepv.com/panel/vsun-vsun540-144mh) | 540 W | -5 yr warranty | | [VSUN VSUN545-144MH](https://comparepv.com/panel/vsun-vsun545-144mh) | 545 W | +10 W, +0.4 pp, -5 yr warranty | | [VSUN VSUN550-144BMH](https://comparepv.com/panel/vsun-vsun550-144bmh) | 550 W | +15 W, +0.6 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +115 W, cooler, +4.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +110 W, cooler, +4.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +95 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/vsun-vsun535-144bmh 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.