--- title: "Q-Cells Q.PEAK DUO BLK ML-G10.a+ 400 Solar Panel: Specs & Datasheet | ComparePV" description: "Q-Cells Q.PEAK DUO BLK ML-G10.a+ 400 solar panel. Specs: 20.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-blk-ml-g10-400" image: "https://comparepv.com/og/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-blk-ml-g10-400.png" updated: 2026-09-11 --- # Q-Cells Q.PEAK DUO BLK ML-G10.a+ 400 Strong in heat, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Q-Cells - **Model:** Q.PEAK DUO BLK ML-G10.a+ 400 - **Series:** Q.PEAK DUO BLK ML-G10.a+ SERIES - **Rated power:** 400 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.40% | 20.60% | Typical | 11,680 | | Power density | 203.7 | 206.2 | Typical | 11,744 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,846 | | Weight (kg) | 22.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.40% | 20.60% | Typical | 11,680 | | Power density | 203.7 | 206.2 | Typical | 11,744 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,846 | | Weight per kWp | 55.0 | 53.0 | Typical | 9,445 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Strengths - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. - **Best for:** Residential, shaded-installations, cold-climate and BIPV. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.40 % - **Voltage at Pmax (Vmp):** 37.95 V - **Current at Pmax (Imp):** 10.54 A - **Open-circuit voltage (Voc):** 45.24 V - **Short-circuit current (Isc):** 11.05 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/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 technology:** PERC - **Cell count:** 132 ### Physical - **Length:** 1879 mm - **Width:** 1045 mm - **Thickness:** 32 mm - **Weight:** 22.0 kg - **Area:** 1.96 m2 - **Power density:** 203.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 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:** 334 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11680 of 14129 | | Power density | 11744 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 9445 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Tier-1 manufacturer, 25-year track record** - Q-Cells (Hanwha Q CELLS, South Korea, founded 1999) is a bankable Tier-1 manufacturer, which directly improves project financing access and lender/insurer confidence for installations using this series. - **Full-black aesthetics without power trade-off** - The fully black design (frame, backsheet, cells) retains efficiency up to 21.1%, putting it in the same league as competitors like LEDVANCE M395-415P54LM (21.25%) or Aptos DNA 108 (21.25%), despite the aesthetic-driven design typically involving an efficiency compromise. - **25-year linear product and power warranty** - A standard-for-segment 25-year product warranty aligns with the power warranty - the manufacturer guarantees roughly 86% of nominal power after 25 years, a market-typical figure for PERC technology released in 2021. - **Anti LeTID, Anti PID, Hot-Spot Protect safeguards** - Q.ANTUM DUO Z technology with zero-gap half-cut cells, combined with LeTID and PID degradation protection, limits energy yield loss in the early years of operation - an important factor when forecasting installation LCOE. - **TÜV Rheinland Quality Controlled PV certification** - This additional voluntary certification program, beyond standard IEC norms, confirms manufacturing consistency, reducing the risk of batch defects in large-scale installations. ## Cons - **Series discontinued** - Released in 2021, this series has since been discontinued - limiting availability of matching modules for system expansions and potentially extending warranty claim resolution times if replacement with an identical model is required. - **PERC technology trails newer solutions** - PERC is a prior-generation technology compared to the N-type TOPCon/HJT now dominant in the premium segment - peer comparables like AE Solar AURORA MD-108 (21.28%) and Aptos DNA 108 (21.25%) achieve higher efficiency at a comparable 415 Wp power rating, suggesting this Q-Cells series is now near the lower competitive bound for efficiency in this segment. - **No bifacial variant available** - The module is monofacial only, while several competing series in this power class offer bifacial variants that can boost energy yield by several percent when mounted over reflective ground or elevated racking. ## About this series The Q.PEAK DUO BLK ML-G10.a+ series is a solar panel line built for residential rooftops, where visual appeal matters just as much as output. Using 132 monocrystalline half-cut cells together with the proprietary **zero-gap Q.ANTUM DUO Z technology**, the modules reduce internal power losses and maintain strong conversion efficiency even under less-than-ideal irradiance. The fully black design, frame, backsheet, and cells alike, lets the panels blend seamlessly into a home's architecture instead of standing out like traditional blue-toned modules. The series also stands out for its structural resilience: a reinforced aluminum frame is rated for extreme snow and wind loads, making it a solid choice in harsher climates. Long-term energy yield stability is supported by built-in **Anti LeTID**, **Anti PID**, and Hot-Spot Protect safeguards that limit performance degradation over time. The whole series is backed by a **25-year product warranty and linear performance warranty**, with manufacturing quality validated through the rigorous TÜV Rheinland Quality Controlled PV certification program. It's a fitting option for buyers looking for a trusted brand, a clean aesthetic finish, and predictable long-term returns on their PV investment. ## Notable figures - Efficiency of 20.4% matches the \*\*PERC 400-450W\*\* median - At 203.7 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - At -0.34%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - #11598 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### Is the Q.PEAK DUO BLK ML-G10.a+ series still available for purchase? No, Q-Cells has discontinued production of this series and it has been removed from the current lineup. Some distributors may still have remaining stock, but new orders from the manufacturer are no longer being fulfilled. The 25-year product warranty still applies in full from the original purchase date, regardless of the model's discontinuation. ### What is the maximum power output of the Q.PEAK DUO BLK ML-G10.a+ panel, and is that high for an all-black module? The highest-rated variants in this series reach up to 415 Wp, a strong result for a fully black aesthetic panel. All-black modules typically have slightly lower efficiency than white-backsheet versions due to the darker coating, but Q.ANTUM DUO Z technology with zero-gap half-cut cells compensates for this, maintaining high energy conversion. ### How does Q.ANTUM DUO Z technology differ from standard PERC cells? Q.ANTUM DUO Z is Q-Cells' proprietary implementation of PERC technology, enhanced with half-cut cells arranged with zero gap between them. This layout reduces losses from internal resistance and shading, improving performance especially in low-light conditions such as early morning, evening, or overcast days, compared to standard PERC panels with full cells. ### Is the Q.PEAK DUO BLK ML-G10.a+ suitable for roofs exposed to heavy snowfall? Yes, the series features a reinforced aluminum frame that increases structural resistance to snow and wind loads. This makes it a solid choice for regions with harsher climate conditions, where standard panels might require additional roof reinforcement or more frequent snow clearing. ### What warranty applies to the Q.PEAK DUO BLK ML-G10.a+ panels? The manufacturer provides a 25-year product warranty along with a 25-year linear power warranty, meaning gradual, predictable performance degradation spread across the entire service life rather than a sudden drop after a few years. Additional Anti LeTID, Anti PID, and Hot-Spot Protect safeguards limit module degradation over time and help maintain rated output. ### Is Q-Cells a reliable manufacturer of solar panels? Yes, Q-Cells is headquartered in South Korea and classified as a Tier 1 manufacturer, indicating financial stability and bankability for projects built with its modules. The build quality of the Q.PEAK DUO BLK ML-G10.a+ series is confirmed by TÜV Rheinland Quality Controlled PV certification, further boosting confidence for investors seeking an established brand. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/qcells-data-sheet-q-peak-duo-blk-ml-g10-series-395-415-da-20-d2c984c0f28f.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 | Cooler, +2.7 pp, +5 yr warranty | | [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, +2.7 pp, +5 yr warranty | | [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, +2.6 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.6 pp | | [Q-Cells Q.PEAK DUO BLK ML-G10+ 385](https://comparepv.com/panel/q-cells-q-peak-duo-blk-ml-g10-385) | 385 W | -15 W, -0.8 pp | | [Q-Cells Q.PEAK DUO BLK ML-G10+ 390](https://comparepv.com/panel/q-cells-q-peak-duo-blk-ml-g10-390) | 390 W | -10 W, -0.5 pp | | [Q-Cells Q.PEAK DUO BLK ML-G10.a+ 395](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-blk-ml-g10-395) | 395 W | -0.3 pp | | [Q-Cells Q.PEAK DUO BLK ML-G10.a+ 405](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-blk-ml-g10-405) | 405 W | +0.2 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.6 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.3 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +105 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +4.1 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +100 W, cooler, +4.1 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +100 W, cooler, +4.1 pp | --- Source: https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-blk-ml-g10-400 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.