--- title: "Resun Solar RS6K-M-335 335W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS6K-M-335 335W solar panel. Specs: 19.85% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs6k-m-335" updated: 2026-09-11 --- # Resun Solar RS6K-M-335 Warranty pick, no clear weak spot 3,392 panels in the 235-435 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS6K-M-335 - **Series:** RS6K-M - **Rated power:** 335 W - **Cell technology:** Monocrystalline ## How it compares Compared against 235-435 W band, all technologies (3392 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 335 W | 400 W | Weak - bottom 17% | | | Module efficiency | 19.85% | 20.46% | Typical | 12,403 | | Power density | 198.5 | 204.1 | Typical | 12,373 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight (kg) | 19.0 kg | 21.4 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 22% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.85% | 20.46% | Typical | 12,403 | | Power density | 198.5 | 204.1 | Typical | 12,373 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight per kWp | 56.7 | 55.3 | Typical | 10,811 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 22% | 21 | ### Strengths - **30 year performance warranty** - Top 22% of the 235-435 W band, against a median of 25 yrs. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 335 W - **Efficiency:** 19.85 % - **Voltage at Pmax (Vmp):** 34.00 V - **Current at Pmax (Imp):** 9.87 A - **Open-circuit voltage (Voc):** 41.50 V - **Short-circuit current (Isc):** 10.36 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/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:** 120 ### Physical - **Length:** 1684 mm - **Width:** 1002 mm - **Thickness:** 35 mm - **Weight:** 19.0 kg - **Area:** 1.69 m2 - **Power density:** 198.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 283 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12403 of 14005 | | Power density | 12373 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 10811 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS6K-M series consists of solar panels built with **half-cut cell** technology, which reduces internal power losses and increases energy conversion efficiency. By splitting the cells in half, the module gains significantly **higher resistance to microcracks and busbar damage**, directly translating into a longer installation lifespan and reduced failure risk under demanding operating conditions. The use of **multi-busbar** technology further improves current collection across the cell surface, minimizing resistance and thermal losses. Another key advantage of the RS6K-M series is **improved resistance to the hot-spot effect** caused by partial shading, allowing the panels to maintain stable performance even under uneven sunlight exposure, for example near trees, chimneys, or neighboring buildings. The black frame gives the modules an aesthetic, uniform appearance, ideal for rooftop installations with high visual requirements. The panels hold CE, TUV, IEC 61215, IEC 61730, VDE, and CEC certifications, with quality further backed by CHUBB Insurance Group coverage. The RS6K-M series works well in both residential and commercial installations where **reliability-to-price ratio** and stable long-term energy output matter most. ## Notable figures - At 19.9% efficiency, this panel is 2.0pp below the \*\*database\*\* median of 21.8% - At 198.5 W/m², this panel generates 19.6 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - -0.34%/°C temperature coefficient - 0.04pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 19.0 kg, this panel is 7.5 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - In the top 89% for efficiency among all N-type panels ## Questions ### Are Resun Solar RS6K-M panels still available for purchase? The RS6K-M series has been discontinued by Resun Solar and replaced by newer, higher-power models. Availability is now limited to remaining distributor stock. Check current stock levels with your supplier before planning a large installation, as sourcing identical panels for future system expansion may become difficult. ### What warranty comes with RS6K-M panels and what does it cover? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty guaranteeing sustained high efficiency over the module's operational life. The investment is further protected by insurance coverage from CHUBB Insurance Group, adding financial security for buyers. ### How does half-cut technology in the RS6K-M differ from standard panels? Half-cut technology splits cells in half, reducing current flow through each segment and lowering resistive and thermal losses. This gives the RS6K-M higher energy conversion efficiency and significantly greater resistance to microcracks and busbar damage, extending the module's real-world lifespan compared to traditional full-cell panels. ### Do RS6K-M panels handle partial shading well, such as from a chimney or tree? Yes, thanks to the half-cut design and enhanced hot-spot resistance, RS6K-M modules cope better with uneven sunlight. Partial shading on part of the panel causes a smaller drop in overall output than with conventional panels, which matters on roofs with obstructions like chimneys, antennas, or neighboring buildings. ### What is the maximum power rating of the RS6K-M and what installations suit it best? The maximum power rating in this series is 340 Wp. This makes it suitable for both smaller residential installations and larger commercial systems where price-to-reliability ratio matters. The black frame also gives the modules a clean, uniform look ideal for roofs with higher aesthetic requirements. ### Is the RS6K-M a bifacial panel? No, the RS6K-M series is a monofacial panel, generating power only from the front side. If additional energy gain from reflected light off the ground is a priority, such as in ground-mounted systems over light-colored gravel, consider Resun Solar's newer bifacial series instead of the RS6K-M. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS6K-M-BLACK-FRAME-325-340W-min-87ca609f1382.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +3.5 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +3.5 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, +3.3 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, +3.3 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -50 W, lighter, +3.1 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -35 W, lighter, +3.1 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -15 W, lighter, +3.1 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.1 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | +25 W, lighter, +3.1 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | +45 W, lighter, +3.1 pp | | [Resun Solar RS6K-325M](https://comparepv.com/panel/resun-solar-rs6k-325m) | 325 W | -10 W, -0.6 pp | | [Resun Solar RS6K-330M](https://comparepv.com/panel/resun-solar-rs6k-330m) | 330 W | -0.3 pp | | [Resun Solar RS6K-340M](https://comparepv.com/panel/resun-solar-rs6k-340m) | 340 W | +0.3 pp | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +105 W, cooler, +3.0 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +100 W, cooler, +2.8 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.8 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/resun-solar-rs6k-m-335 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.