--- title: "Resun Solar RS8K-M-FB-495 495W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8K-M-FB-495 495W solar panel. Specs: 22.94% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8k-m-fb-495" updated: 2026-09-11 --- # Resun Solar RS8K-M-FB-495 Middle of its segment, weak in heat 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8K-M-FB-495 - **Series:** RS8K-M-FB - **Rated power:** 495 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 495 W | 465 W | Strong - top 4% | | | Module efficiency | 22.94% | 22.52% | Typical | 2,334 | | Power density | 229.4 | 225.2 | Typical | 2,338 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 23.6 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.94% | 22.52% | Typical | 2,334 | | Power density | 229.4 | 225.2 | Typical | 2,338 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 47.7 | 52.2 | Typical | 1,806 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 495 W - **Efficiency:** 22.94 % - **Voltage at Pmax (Vmp):** 35.19 V - **Current at Pmax (Imp):** 13.99 A - **Open-circuit voltage (Voc):** 42.53 V - **Short-circuit current (Isc):** 14.49 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 ### Physical - **Length:** 1903 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.6 kg - **Area:** 2.16 m2 - **Power density:** 229.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 418 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2334 of 14005 | | Power density | 2338 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 1806 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8K-M-FB series is a sleek, full black photovoltaic module designed for installations where both performance and rooftop aesthetics matter. It combines **TOPCon technology** with a **half-cell design**, reducing internal power losses and minimizing the risk of hot-spot damage under partial shading. The use of **16 busbars** per cell further improves current conduction efficiency and increases the panel's mechanical resistance to microcracks and busbar damage. The module also stands out for its strong **PID resistance**, which translates into lower power degradation over time and a reduced levelized cost of energy (LCOE) across the system's lifetime. Tempered glass with enhanced light transmittance improves energy yield even under low-irradiance conditions, while the sturdy frame withstands heavy wind and snow loads as well as harsh environments, including salt mist and ammonia exposure. As a result, the RS8K-M-FB is well suited both for residential rooftops with high aesthetic requirements and for commercial projects where long-term reliability and stable energy output throughout the module's service life are essential. ## Notable figures - At 22.9% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 229.4 W/m² packs 4.2 W/m² more into the same footprint vs \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 450-500W\*\* median - In the top 17% for efficiency among all TOPCon panels ## Questions ### What is the maximum power output of the RS8K-M-FB panel and who is it suited for? The RS8K-M-FB panel reaches a maximum power output of 495 Wp, making it a solid choice for both residential and larger commercial installations. High per-unit power reduces the number of modules needed to reach a given system capacity, shortening installation time and lowering the roof area required. ### How does the TOPCon technology in the RS8K-M-FB differ from standard PERC panels? TOPCon is a newer generation of silicon cell technology that uses an additional passivation layer to reduce recombination losses, achieving higher efficiency than conventional PERC cells. In practice, this means higher energy yield from the same panel area and lower power degradation over time, resulting in a lower LCOE over the system's lifetime. ### Is the RS8K-M-FB suitable for roofs where aesthetics matter? Yes, the RS8K-M-FB series is designed as a full black module, including a black frame and backsheet, which blends well with dark roof coverings. This makes it a popular choice for residential installations where energy yield and a clean, uniform roof appearance are both priorities. ### What warranty comes with the RS8K-M-FB panels and what does it cover? Resun Solar provides a 15-year product warranty along with a 30-year linear power warranty. This covers both manufacturing and material defects, as well as a guaranteed power output level over the long term, which directly affects the return on investment of a solar installation. ### Does the 16-busbar design of the RS8K-M-FB have a real impact on durability and efficiency? Yes, the 16-busbar layout increases the number of current-carrying paths on each cell, improving current collection efficiency and reducing resistive losses. It also enhances mechanical resistance to microcracks, which matters during transport, installation, and long-term operation under varying weather conditions. ### Is the RS8K-M-FB resistant to harsh environmental conditions like salt mist? Yes, the RS8K-M-FB frame is engineered to withstand heavy wind and snow loads as well as corrosion from salt mist and ammonia exposure. This makes the module suitable not only for typical European conditions but also for coastal or agricultural installations where these factors significantly affect equipment lifespan. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8K-M-FB-470-495W-TOPCON-16bb-1cdaf651464e.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +15 W, cooler, +2.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +10 W, cooler, +1.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +1.6 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +1.6 pp | | [Resun Solar RS8K-M-470W](https://comparepv.com/panel/resun-solar-rs8k-m-470w) | 470 W | -25 W, -1.2 pp | | [Resun Solar RS8K-M-475W](https://comparepv.com/panel/resun-solar-rs8k-m-475w) | 475 W | -20 W, -0.9 pp | | [Resun Solar RS8K-M-480W](https://comparepv.com/panel/resun-solar-rs8k-m-480w) | 480 W | -15 W, -0.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +65 W, cooler, +1.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +60 W, cooler, +1.7 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +55 W, lighter, +1.5 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +45 W, cooler, +1.5 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +45 W, cooler, +1.5 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +50 W, cooler, +1.3 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +50 W, cooler, +1.3 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8k-m-fb-495 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.