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435W FULL BLACK vs 425W FULL BLACK 16 of 19 identical Swap Change panels

Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS8V-M-425W FULL BLACK

Resun Solar
RS8V-M-435W FULL BLACK
435 Wp 22.28 % TOPCon
Open panel page Datasheet PDF
VS
Resun Solar
RS8V-M-425W FULL BLACK
425 Wp 21.76 % TOPCon
Open panel page Datasheet PDF
The verdict

435W FULL BLACK leads on the differences that matter

The largest is module efficiency: 0.52 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 435W FULL BLACK 425W FULL BLACK Difference
Module efficiency 22.28 % 21.76 % 0.52 pp more efficient
Power density 222.8 Wp/m² 217.6 Wp/m² 5.1 Wp/m² higher
Rated power 435 Wp 425 Wp 10 W more power
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.250 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
435W FULL BLACK
14,595 kWh
425W FULL BLACK
14,260 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 435W FULL BLACK 425W FULL BLACK
Standard test conditions 25 °C 100.0% of rated power 435 W 425 W
Cool, bright day 40 °C 96.2% of rated power 419 W 409 W
Typical summer roof 55 °C 92.5% of rated power 402 W 393 W
Hot roof 70 °C 88.8% of rated power 386 W 377 W
03

Full specification

Parameter 435W FULL BLACK 425W FULL BLACK Difference
Power and efficiency
Rated power 435 Wp 425 Wp +10 W for 435W FULL BLACK
Module efficiency 22.28 % 21.76 % +0.52 pp for 435W FULL BLACK
Power density 222.8 Wp/m² 217.6 Wp/m² +5.1 Wp/m² for 435W FULL BLACK
Open-circuit voltage 37.97 V 37.71 V Effectively the same
Voltage at max power 32.25 V 31.94 V Effectively the same
Short-circuit current 14.35 A 14.19 A Effectively the same
Current at max power 13.49 A 13.31 A Effectively the same
Temperature
Temperature coefficient -0.250 %/°C -0.250 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 21.5 kg 21.5 kg Same
Weight per kWp 49.4 kg/kWp 50.6 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#5,403 vs #7,285
435W FULL BLACK leads by 1,882 places
Power density
#5,150 vs #7,172
435W FULL BLACK leads by 2,022 places
Heat behaviour
#456 vs #456
Tied - the same position in the database
Weight
#2,936 vs #3,991
435W FULL BLACK leads by 1,055 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#9,138 vs #9,910
435W FULL BLACK leads by 772 places
05

More useful comparisons

Open the full database
Same series, other bin
Resun Solar
Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS8V-M-430W FULL BLACK
One difference: module efficiency
Same series, other bin
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Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS8V-M-420W FULL BLACK
3 differences, the largest is module efficiency
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Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS9H-M TOPCON-735
14 differences, the largest is module efficiency
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Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS9H-M TOPCON-730
14 differences, the largest is module efficiency
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Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS9H-M TOPCON-725
14 differences, the largest is module efficiency
Same manufacturer
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Resun Solar RS8V-M-435W FULL BLACK vs Resun Solar RS9H-M TOPCON-720
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Resun Solar RS8V-M-435W FULL BLACK or Resun Solar RS8V-M-425W FULL BLACK?
According to our database: Resun Solar RS8V-M-435 W FULL BLACK has higher module efficiency (22.28% vs 21.76%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Resun Solar RS8V-M-435W FULL BLACK and Resun Solar RS8V-M-425W FULL BLACK?
Resun Solar RS8V-M-435 W FULL BLACK has a module efficiency of 22.28%, while Resun Solar RS8V-M-425 W FULL BLACK is 21.76%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Resun Solar RS8V-M-435W FULL BLACK use vs Resun Solar RS8V-M-425W FULL BLACK?
Resun Solar RS8V-M-435 W FULL BLACK uses TOPCon cells; Resun Solar RS8V-M-425 W FULL BLACK uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Resun Solar RS8V-M-435W FULL BLACK and Resun Solar RS8V-M-425W FULL BLACK?
Resun Solar RS8V-M-435 W FULL BLACK has a 30 years power warranty; Resun Solar RS8V-M-425 W FULL BLACK has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.