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Resun Solar Brand review

RS8V-M-405

405 Wp Monocrystalline
ComparePV verdict

Middle of its segment, weak in heat

Rank 11,411 of 14,005
Compare panels Datasheet PDF
Power (Wp)
405
Typical for its class
Efficiency (%)
20.74
Typical · median 21.30%
Density (Wp/m²)
207.4
Typical · median 212.8
Temp (%/°C)
-0.350
Weak · bottom 23%
Weight (kg)
22.0
Typical · median 22.6 kg
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

6,665 panels in the 305-505 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 20.74% 21.30% Typical 10,645
Power density 207.4 212.8 Typical 10,626
Temperature coefficient -0.350 -0.300 Weak · bottom 23% 10,419
Weight per kWp 54.3 53.2 Typical 8,586
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Best for

Residential, shaded-installations and BIPV.

Not ideal for

Hot climates.

Watch-outs
-0.350 %/°C temperature coefficient

Bottom 23% of the 305-505 W band, against a median of -0.300.

Notes from the database
  • At 20.7% efficiency, this panel is 1.1pp below the database median of 21.8%
  • 207.4 W/m² power density is 10.7 W/m² below database median (218.1 W/m²) - requires larger installation area
  • At -0.35%/°C, loses 0.05pp more power per degree than database median (-0.30%/°C)
  • Weight of 22.0 kg (4.5 kg below database median of 26.5 kg) allows easier transport and roof mounting
  • Ranked #10645 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 405 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.74 % Typical Segment median 21.30%
Vmpp · Impp 31.21 V · 12.98 A Operating point at max power
Voc · Isc 37.23 V · 13.87 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×35 mm · 1.95 m² of roof
Weight 22.0 kg Typical Typical · median 22.6 kg
Cells 108 Monocrystalline
Coefficient Pmax -0.350 %/°C Weak bottom 23% of its segment
Coefficient Voc · Isc -0.320 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
Degradation 0.50 % Per year after the first

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
-0.350 %/°C against a segment median of -0.300
-

Alternatives

All Resun Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Resun Solar RS8V-M-405 405 W 20.74% -0.350 22.0 kg You are here
AIKO-455-MAH54Db 455 W 23.30% -0.260 24.0 kg +50 W, cooler, +2.6 pp
LR5-54HTH-455M 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.6 pp
YL455CF54 e/2 455 W 23.30% -0.290 20.3 kg +50 W, cooler, +2.6 pp
ESM-455T 455 W 23.30% -0.310 21.0 kg +50 W, cooler, +2.6 pp
SE5-54HBC-455W 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.6 pp
JST-EDMH-(445-465)W-TD (455W class) 455 W 23.30% -0.300 20.5 kg +50 W, cooler, +2.6 pp
LX-455M/182R-96+ GG 455 W 23.30% -0.260 23.5 kg +50 W, cooler, +2.6 pp
RS8V-M-400 400 W 20.48% -0.350 22.0 kg -0.3 pp
RS8V-M-410W 410 W 21.00% -0.350 22.0 kg +0.3 pp
RS8V-M-415W 415 W 21.25% -0.350 22.0 kg +10 W, +0.5 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +105 W, cooler, +4.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +90 W, cooler, +4.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +100 W, cooler, +4.0 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +85 W, cooler, +3.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +95 W, cooler, +3.8 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +95 W, cooler, +3.8 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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