Resun Solar RS8V425M-FB vs Resun Solar RS9H-M TOPCON-720
VS
The verdict
RS9H-M TOPCON-720 leads on the differences that matter
The largest is module efficiency: 1.42 pp more efficient. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
RS8V425M-FB
RS9H-M TOPCON-720
Difference
Module efficiency
21.76 %
23.18 %
1.42 pp more efficient
Temperature coefficient
-0.350 %/°C
-0.300 %/°C
0.050 %/°C better in heat
Rated power
425 Wp
720 Wp
295 W more power
Power density
217.6 Wp/m²
231.8 Wp/m²
14.1 Wp/m² higher
Weight
21.5 kg
32.3 kg
10.8 kg lighter
Weight per kWp
50.6 kg/kWp
44.9 kg/kWp
5.7 kg/kWp lighter
Open-circuit voltage
37.71 V
49.40 V
11.69 V apart
Short-circuit current
14.19 A
18.49 A
4.30 A apart
Module area
1.953 m²
3.106 m²
1.154 m² apart
Voltage at max power
31.94 V
41.30 V
9.36 V apart
Current at max power
13.31 A
17.44 A
4.13 A apart
Cell count
108
132
24 cells apart
Dimensions
1722x1134x30 mm
2384x1303x30 mm
1722x1134x30 mm vs 2384x1303x30 mm
02
What it means on a roof
Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
RS8V425M-FB
14,038 kWh
RS9H-M TOPCON-720
23,782 kWh
Lifetime gap
9,744 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
RS8V425M-FB
RS9H-M TOPCON-720
Standard test conditions
25 °C
100.0% of rated power
425 W
720 W
Cool, bright day
40 °C
94.8% of rated power
403 W
688 W
Typical summer roof
55 °C
89.5% of rated power
380 W
655 W
Hot roof
70 °C
84.2% of rated power
358 W
623 W
03
Full specification
Parameter
RS8V425M-FB
RS9H-M TOPCON-720
Difference
Power and efficiency
Rated power
425 Wp
720 Wp
+295 W for RS9H-M TOPCON-720
Module efficiency
21.76 %
23.18 %
+1.42 pp for RS9H-M TOPCON-720
Power density
217.6 Wp/m²
231.8 Wp/m²
+14.1 Wp/m² for RS9H-M TOPCON-720
Open-circuit voltage
37.71 V
49.40 V
11.69 V apart
Voltage at max power
31.94 V
41.30 V
9.36 V apart
Short-circuit current
14.19 A
18.49 A
4.30 A apart
Current at max power
13.31 A
17.44 A
4.13 A apart
Temperature
Temperature coefficient
-0.350 %/°C
-0.300 %/°C
+0.050 %/°C for RS9H-M TOPCON-720
Mechanical
Dimensions
1722x1134x30 mm
2384x1303x30 mm
1722x1134x30 mm vs 2384x1303x30 mm
Module area
1.953 m²
3.106 m²
1.154 m² apart
Weight
21.5 kg
32.3 kg
-10.8 kg for RS8V425M-FB
Weight per kWp
50.6 kg/kWp
44.9 kg/kWp
-5.7 kg/kWp for RS9H-M TOPCON-720
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.50 %/yr
0.50 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
132
24 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#7,285
vs
#1,424
RS9H-M TOPCON-720 leads by 5,861 places
Power density
#7,172
vs
#1,347
RS9H-M TOPCON-720 leads by 5,825 places
Heat behaviour
#10,419
vs
#6,093
RS9H-M TOPCON-720 leads by 4,326 places
Weight
#3,991
vs
#559
RS9H-M TOPCON-720 leads by 3,432 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#9,910
vs
#325
RS9H-M TOPCON-720 leads by 9,585 places
05
Open the full database
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The same specification on paper
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Resun Solar RS8V425M-FB or Resun Solar RS9H-M TOPCON-720?
According to our database: Resun Solar RS9H-M TOPCON-720 has higher module efficiency (23.18% vs 21.76%); Resun Solar RS9H-M TOPCON-720 tolerates heat better (temp coeff -0.300%/°C vs -0.350%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Resun Solar RS8V425M-FB and Resun Solar RS9H-M TOPCON-720?
Resun Solar RS8V425M-FB has a module efficiency of 21.76%, while Resun Solar RS9H-M TOPCON-720 is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Resun Solar RS8V425M-FB use vs Resun Solar RS9H-M TOPCON-720?
Resun Solar RS8V425M-FB uses TOPCon cells; Resun Solar RS9H-M TOPCON-720 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 RS8V425M-FB and Resun Solar RS9H-M TOPCON-720?
Resun Solar RS8V425M-FB has a 30 years power warranty; Resun Solar RS9H-M TOPCON-720 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.