--- title: "Resun Solar RS8V-M-400 400W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8V-M-400 400W solar panel. Specs: 20.48% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8v-m-400" updated: 2026-09-11 --- # Resun Solar RS8V-M-400 Middle of its segment, weak in heat 6,519 panels in the 300-500 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8V-M-400 - **Series:** RS8V-M BLACK FRAME - **Rated power:** 400 W - **Cell technology:** Monocrystalline ## How it compares Compared against 300-500 W band, all technologies (6519 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 435 W | Weak - bottom 24% | | | Module efficiency | 20.48% | 21.30% | Typical | 11,468 | | Power density | 204.8 | 212.6 | Typical | 11,370 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 23% | 10,419 | | Weight (kg) | 22.0 kg | 22.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.48% | 21.30% | Typical | 11,468 | | Power density | 204.8 | 212.6 | Typical | 11,370 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 23% | 10,419 | | Weight per kWp | 55.0 | 53.2 | Typical | 9,361 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.350 %/°C temperature coefficient** - Bottom 23% of the 300-500 W band, against a median of -0.300. - **Best for:** Residential, shaded-installations and BIPV. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.48 % - **Voltage at Pmax (Vmp):** 31.01 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 37.07 V - **Short-circuit current (Isc):** 13.79 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 204.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 338 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11468 of 14005 | | Power density | 11370 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 9361 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8V-M BLACK FRAME series pairs an all-black aesthetic with half-cut multi-busbar cell technology (9-11BB), making it a natural choice for residential rooftop installations where both performance and visual appeal on the facade matter. The use of **half-cell technology** reduces internal power loss and significantly lowers the risk of failure caused by microcracks and broken busbars, keeping the module stable even under demanding operating conditions. The panel stands out for its **high resistance to hot-spot effects** triggered by partial shading, which matters in real-world installations exposed to shadows from chimneys, antennas, or trees. Thanks to tempered glass with high light transmittance and anti-reflective properties, the module delivers **better performance in low-light conditions**, translating into higher energy yield on overcast days. A robust, black anodized aluminum frame provides **high mechanical strength**, certified for wind and snow load, while resistance to salt mist and ammonia makes the panel suitable for coastal and agricultural locations as well. In addition, **PID degradation resistance** limits power loss over time, lowering the levelized cost of energy (LCOE) throughout the system's lifecycle. ## Notable figures - At 20.5% efficiency, this panel is 1.3pp below the \*\*database\*\* median of 21.8% - At 204.8 W/m², this panel generates 13.3 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - -0.35%/°C temperature coefficient - 0.05pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 22.0 kg, this panel is 4.5 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - In the top 82% for efficiency among all N-type panels ## Questions ### What is the maximum power output of the RS8V-M BLACK FRAME panel and what installations is it suited for? Panels in the RS8V-M BLACK FRAME series reach up to 415 Wp. They are a good fit for residential rooftop installations with limited roof space, where high energy yield per square meter and an aesthetic, uniformly black appearance of the entire array both matter. ### How many years of warranty does the Resun Solar RS8V-M BLACK FRAME panel come with? The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. This means that over three decades of operation the panel maintains a guaranteed, gradually declining percentage of its initial power, ensuring a predictable return on investment. ### How does the half-cell technology in RS8V-M panels differ from standard full-size cells? Half-cut cells with 9-11BB multi-busbar design are split in half, reducing current losses and internal resistance in the module. This results in higher efficiency, lower susceptibility to microcracks and busbar interruption, and less power loss under partial shading compared to traditional full-cell panels. ### Do RS8V-M BLACK FRAME panels perform well on a roof partially shaded by a chimney or antenna? Yes, the series offers high resistance to the hot-spot effect caused by partial shading. The half-cell cell design limits how a shaded segment affects the whole panel, meaningfully reducing the risk of overheating and power loss from intermittent shade cast by chimneys, antennas, or nearby trees. ### Is the RS8V-M BLACK FRAME panel suitable for coastal or agricultural installations? Yes, the module is certified for salt mist and ammonia resistance, making it suitable both for coastal locations exposed to corrosion from salty air and for agricultural sites where ammonia vapors are present in the air, such as near livestock farms. ### What does PID resistance in RS8V-M panels mean and why does it matter? PID (Potential Induced Degradation) is a phenomenon that reduces panel power due to voltage potential differences within the array. PID resistance in the RS8V-M series limits this effect, allowing the module to retain its rated power longer and keeping the effective levelized cost of energy (LCOE) lower over the system's lifetime. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8V-M-400-415W-BLACKmin-min-971b8a6ccda6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +40 W, cooler, +2.6 pp | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, cooler, +2.6 pp | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.6 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, cooler, +2.6 pp | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, cooler, +2.6 pp | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.6 pp | | [Resun Solar RS8V-M-405](https://comparepv.com/panel/resun-solar-rs8v-m-405) | 405 W | +0.3 pp | | [Resun Solar RS8V-M-410W](https://comparepv.com/panel/resun-solar-rs8v-m-410w) | 410 W | +10 W, +0.5 pp | | [Resun Solar RS8V-M-415W](https://comparepv.com/panel/resun-solar-rs8v-m-415w) | 415 W | +15 W, +0.8 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +4.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +100 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8v-m-400 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.