--- title: "Q-Cells Q.PEAK DUO BLK-G9 335 Solar Panel: Specs & Datasheet | ComparePV" description: "Q-Cells Q.PEAK DUO BLK-G9 335 solar panel. Specs: 19.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-335" image: "https://comparepv.com/og/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-335.png" updated: 2026-09-11 --- # Q-Cells Q.PEAK DUO BLK-G9 335 Solid all-round for its segment 3,435 panels in the 235-435 W band, all technologies ## Identity - **Manufacturer:** Q-Cells - **Model:** Q.PEAK DUO BLK-G9 335 - **Series:** Q.PEAK DUO BLK-G9 - **Rated power:** 335 W - **Cell technology:** Monocrystalline ## How it compares Compared against 235-435 W band, all technologies (3435 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 335 W | 397 W | Weak - bottom 18% | | | Module efficiency | 19.40% | 20.43% | Typical | 12,824 | | Power density | 194.4 | 203.9 | Typical | 12,796 | | Temperature coefficient | -0.350 | -0.340 | Typical | 10,489 | | Weight (kg) | 17.5 kg | 21.4 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.40% | 20.43% | Typical | 12,824 | | Power density | 194.4 | 203.9 | Typical | 12,796 | | Temperature coefficient | -0.350 | -0.340 | Typical | 10,489 | | Weight per kWp | 52.2 | 55.3 | Typical | 5,750 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | - **Best for:** Residential, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 335 W - **Efficiency:** 19.40 % - **Voltage at Pmax (Vmp):** 33.81 V - **Current at Pmax (Imp):** 9.91 A - **Open-circuit voltage (Voc):** 40.87 V - **Short-circuit current (Isc):** 10.43 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 120 ### Physical - **Length:** 1673 mm - **Width:** 1030 mm - **Thickness:** 32 mm - **Weight:** 17.5 kg - **Area:** 1.72 m2 - **Power density:** 194.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 86.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 280 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12824 of 14129 | | Power density | 12796 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 5750 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Q.ANTUM DUO Z technology with half-cut cells** - Eliminating gaps between cells and using a 12-busbar layout reduces resistive losses and increases resistance to microcracks, resulting in more stable long-term module performance. - **Favorable -0.35%/°C temperature coefficient** - The -0.35%/°C value outperforms typical older PERC modules (around -0.37 to -0.40%/°C), meaning less power loss at high panel temperatures and higher yields on hot days. - **All-Black aesthetic for residential roofs** - The fully black frame and backsheet allow discreet integration with dark roof surfaces, an important selling point in the residential segment where aesthetics matter alongside electrical performance. - **Tier-1 manufacturer with 25+ years of experience** - Hanwha Q Cells (South Korea, founded 1999) is a bankable Tier-1 manufacturer, reducing financial risk for investors and easing bank financing approval for installations. ## Cons - **Series discontinued** - The Q.PEAK DUO BLK-G9 series was manufactured from 2020 to 2022 and has since been discontinued, meaning limited availability of identical replacement modules and potential difficulties with like-for-like warranty service. - **Efficiency below some competitors** - The maximum 20.3% efficiency is lower than comparable models such as the JA Solar JAM60D10 (20.4%) or YS Solar SM-90 (21%), meaning slightly lower power output for the same roof area. - **No bifacial variant** - The module is monofacial only, while bifacial technology has become standard in newer premium series, enabling extra energy yield from ground reflection, especially in ground-mount or elevated installations. - **Power warranty below latest TOPCon standards** - The 25-year power warranty guaranteeing 86% output trails newer N-type TOPCon modules, which now offer up to 30-year warranties while retaining over 87.4% of nominal power. ## About this series Q-Cells Q.PEAK DUO BLK-G9 photovoltaic panels are a breakthrough solution utilizing **Q.ANTUM DUO Z technology**, which effectively eliminates empty spaces between individual cells. Thanks to this seamless layout, these modules achieve a significantly higher power density, which is crucial on the limited roof surface of single-family buildings. The use of **monocrystalline half-cut cells** in combination with an innovative twelve-busbar system minimizes internal energy losses and significantly increases the module resistance to micro-cracks. This series has been designed for the most demanding prosumer installations, where **All-Black aesthetics** must go hand in hand with maximum current efficiency. The completely black surface makes the panels blend discreetly into the dark expanses of modern roofs, solving the problem of visually unattractive installations. Compared to traditional competitive modules, the G9 series stands out for its excellent performance in diffuse light conditions and a favorable temperature coefficient, which guarantees **higher energy yields on hot days**. This is an ideal choice for investors focusing on uncompromising quality and **long-term stability of electrical parameters**, confirmed by durability certificates that significantly exceed standard market norms. ## Notable figures - Module efficiency of 19.4% is 2.4pp below average for \*\*database\*\* panels (median: 21.8%) - 194.4 W/m² power density is 23.7 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.35%/°C temperature coefficient - 0.05pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 17.5 kg, this panel is 9.0 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - #12824 for efficiency, #10489 for temperature performance out of 14129 panels ## Questions ### Is the Q.PEAK DUO BLK-G9 series still available for purchase? The Q.PEAK DUO BLK-G9 series has been discontinued by Q-Cells and is no longer available as a new product. Limited stock may occasionally appear through distributors or the secondary market. If you need a similar All-Black module with comparable technology, Q-Cells offers newer generations such as the G10+ or G11 series, which retain the Q.ANTUM platform at higher wattages per panel. ### What warranty comes with the Q.PEAK DUO BLK-G9 panels? Q-Cells backs the Q.PEAK DUO BLK-G9 series with a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power warranty. After 25 years, the module is guaranteed to retain at least 86% of its rated output - a figure that exceeds the common industry benchmark of 80% over the same period. ### What is Q.ANTUM DUO Z technology and why does it matter in the G9 series? Q.ANTUM DUO Z is Q-Cells' proprietary cell layout that eliminates the dead space between monocrystalline half-cut cells, raising module efficiency to 20.3% for the 350 Wp variant. The 12-busbar design shortens the current path, reducing resistive losses and lowering the risk of micro-cracks during shipping and long-term operation - both factors that directly impact the module's energy yield over its 25-year lifetime. ### How does the Q.PEAK DUO BLK-G9 350W perform on hot summer days? The series carries a temperature coefficient of -0.35%/°C for Pmax, which is better than most budget PERC modules rated at -0.37 to -0.40%/°C. At a cell temperature of 70°C, the module loses roughly 17.5% of its STC output rather than over 20%, translating to measurably higher daily energy yields during heat waves compared to lower-tier alternatives. ### Do the all-black Q.PEAK DUO BLK-G9 panels look good on light-colored or terracotta roof tiles? The BLK-G9 series features a full All-Black aesthetic: black cells, black anodized frame, and black backsheet. On dark roofs - black tiles, anthracite standing-seam metal, or dark bitumen shingles - the panels blend in seamlessly. On light terracotta or red ceramic tiles the contrast is noticeable, which some homeowners see as a downside. It is worth reviewing renders with your installer or architect before committing. ### Is the Q.PEAK DUO BLK-G9 350W suitable for a pitched roof with partial shading? Yes. The half-cut cell technology splits each cell into two independent halves, dividing the module into two separate electrical strings. When a chimney, vent pipe, or dormer shades part of the panel, power losses are roughly halved compared to a full-cell module. At 1673×1030 mm and 17.5 kg, the module is straightforward to install on standard roof-hook systems and is rated for snow loads up to 6,000 Pa and wind loads up to 4,000 Pa. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1093418779637cd61a29893-c318181deec8.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, +3.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +3.8 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +3.8 pp | | [Heckert Solar ZEUS 3.2 285WP FullBlack](https://comparepv.com/panel/heckert-solar-zeus-3-2-285wp-fullblack) | 285 W | -50 W, cooler, +3.7 pp | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -50 W, lighter, +3.6 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -35 W, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -15 W, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | +25 W, +3.6 pp, +5 yr warranty | | [Q-Cells Q.PEAK DUO BLK-G9 340](https://comparepv.com/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-340) | 340 W | +0.3 pp | | [Q-Cells Q.PEAK DUO BLK-G9 345](https://comparepv.com/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-345) | 345 W | +10 W, +0.6 pp | | [Q-Cells Q.PEAK DUO BLK-G9 350](https://comparepv.com/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-350) | 350 W | +15 W, +0.9 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +130 W, cooler, +4.4 pp | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +125 W, cooler, +4.2 pp | | [Luxor Solar LX-455M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-455m-182r-96-gg) | 455 W | +120 W, cooler, +3.9 pp | --- Source: https://comparepv.com/panel/hanwha-q-cells-gmbh-q-peak-duo-blk-g9-335 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.