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Q-Cells Q.PEAK DUO BLK ML-G10.a+ 405
Q-Cells Brand review

Q.PEAK DUO BLK ML-G10.a+ 405

405 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 10,619 of 14,129
Compare panels Datasheet PDF
Power (Wp)
405
Typical for its class
Efficiency (%)
20.60
Typical · median 20.60%
Density (Wp/m²)
206.3
Typical · median 206.2
Temp (%/°C)
-0.340
Strong · top 24%
Weight (kg)
22.0
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

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.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.60% 20.60% Typical 11,172
Power density 206.3 206.2 Typical 11,147
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,846
Weight per kWp 54.3 53.0 Typical 8,666
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 3 caution
Best for

Residential, shaded-installations, cold-climate and BIPV.

Strengths
-0.340 %/°C temperature coefficient

Top 24% of the PERC 400-450 W segment, against a median of -0.350.

What owners get
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.

Trade-offs
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.

Notes from the database
  • Efficiency of 20.6% matches the PERC 400-450W median
  • Power density of 206.3 W/m² matches the PERC 400-450W median
  • At -0.34%/°C, hot weather performance is typical for PERC 400-450W panels
  • #11093 for efficiency, #8778 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 405 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.60 % Typical Segment median 20.60%
Vmpp · Impp 38.22 V · 10.60 A Operating point at max power
Voc · Isc 45.27 V · 11.08 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1879×1045×32 mm · 1.96 m² of roof
Weight 22.0 kg Typical Typical · median 22.0 kg
Cells 132 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 24% of its segment
Coefficient Voc · Isc -0.270 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 86.0 % Equals 338 W guaranteed
Degradation 2.00 → 0.50 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Q-Cells in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 405 Wp appear here. The rest cover the whole series.

Relative Efficiency vs. Years (Linear Performance Warranty) Relative Efficiency vs. Years (Linear Performance Warranty) Whole series Relative Efficiency vs. Irradiance (Low Irradiance Performance) Relative Efficiency vs. Irradiance (Low Irradiance Performance) Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.340 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Q-Cells Q.PEAK DUO BLK ML-G10.a+ 405 405 W 20.60% -0.340 22.0 kg You are here
AIKO-455-MAH54Db 455 W 23.30% -0.260 24.0 kg +50 W, cooler, +2.7 pp
LR5-54HTH-455M 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.7 pp
YL455CF54 e/2 455 W 23.30% -0.290 20.3 kg +50 W, cooler, +2.7 pp
ESM-455T 455 W 23.30% -0.310 21.0 kg +50 W, +2.7 pp, +5 yr warranty
SE5-54HBC-455W 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.7 pp
JST-EDMH-(445-465)W-TD (455W class) 455 W 23.30% -0.300 20.5 kg +50 W, +2.7 pp, +5 yr warranty
LX-455M/182R-96+ GG 455 W 23.30% -0.260 23.5 kg +50 W, cooler, +2.7 pp
Q.PEAK DUO BLK ML-G10+ 385 385 W 19.60% -0.340 22.0 kg -20 W, -1.0 pp
Q.PEAK DUO BLK ML-G10+ 390 390 W 19.90% -0.340 22.0 kg -15 W, -0.7 pp
Q.PEAK DUO BLK ML-G10.a+ 395 395 W 20.10% -0.340 22.0 kg -10 W, -0.5 pp
Q.PEAK DUO BLK ML-G10.a+ 400 400 W 20.40% -0.340 22.0 kg -0.2 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +105 W, cooler, +4.4 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +100 W, cooler, +4.1 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +100 W, cooler, +4.1 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +95 W, cooler, +3.9 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +95 W, cooler, +3.9 pp

Found 18 panels of the same or similar size to this one, within ±10 mm. See them here Found 55 panels of the same or similar size to this one, within ±25 mm. See them here Found 105 panels of the same or similar size to this one, within ±50 mm. See them here Found 1934 panels of the same or similar size to this one, within ±100 mm. See them here

About the Q.PEAK DUO BLK ML-G10.a+ SERIES series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

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.
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