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RS9H-M-DG vs RS9H-M-DG-705 16 of 19 identical Swap Change panels

Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-705

Resun Solar RS9H-M-DG
Resun Solar
RS9H-M-DG
700 Wp 22.53 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Resun Solar RS9H-M-DG-705
Resun Solar
RS9H-M-DG-705
705 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

3 differences, none of them an advantage

The largest is open-circuit voltage: 1.50 V apart. 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 RS9H-M-DG RS9H-M-DG-705 Difference
Open-circuit voltage 47.30 V 48.80 V 1.50 V apart
Short-circuit current 18.92 A 18.36 A 0.56 A apart
Voltage at max power 39.40 V 40.70 V 1.30 V apart
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
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
RS9H-M-DG
23,121 kWh
RS9H-M-DG-705
23,286 kWh
Lifetime gap
165 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario RS9H-M-DG RS9H-M-DG-705
Standard test conditions 25 °C 100.0% of rated power 700 W 705 W
Cool, bright day 40 °C 95.5% of rated power 669 W 673 W
Typical summer roof 55 °C 91.0% of rated power 637 W 642 W
Hot roof 70 °C 86.5% of rated power 606 W 610 W
03

Full specification

Parameter RS9H-M-DG RS9H-M-DG-705 Difference
Power and efficiency
Rated power 700 Wp 705 Wp Effectively the same
Module efficiency 22.53 % 22.70 % Effectively the same
Power density 225.3 Wp/m² 227.0 Wp/m² Effectively the same
Open-circuit voltage 47.30 V 48.80 V 1.50 V apart
Voltage at max power 39.40 V 40.70 V 1.30 V apart
Short-circuit current 18.92 A 18.36 A 0.56 A apart
Current at max power 17.78 A 17.33 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x35 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.5 kg 38.5 kg Same
Weight per kWp 55.0 kg/kWp 54.6 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.50 %/yr 0.50 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,982 vs #3,307
RS9H-M-DG-705 leads by 675 places
Power density
#3,989 vs #3,361
RS9H-M-DG-705 leads by 628 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#9,361 vs #8,959
RS9H-M-DG-705 leads by 402 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#928 vs #771
RS9H-M-DG-705 leads by 157 places
05

More useful comparisons

Open the full database
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Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-720
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Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-710
6 differences, the largest is module efficiency
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Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-700
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Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-695
3 differences, the largest is short-circuit current
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Resun Solar RS9H-M-DG vs Resun Solar RS9H-M-DG-690
5 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Resun Solar RS9H-M-DG or Resun Solar RS9H-M-DG-705?
According to our database: Resun Solar RS9H-M-DG-705 has higher module efficiency (22.70% vs 22.53%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Resun Solar RS9H-M-DG and Resun Solar RS9H-M-DG-705?
Resun Solar RS9H-M-DG has a module efficiency of 22.53%, while Resun Solar RS9H-M-DG-705 is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Resun Solar RS9H-M-DG use vs Resun Solar RS9H-M-DG-705?
Resun Solar RS9H-M-DG uses TOPCon cells; Resun Solar RS9H-M-DG-705 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 RS9H-M-DG and Resun Solar RS9H-M-DG-705?
Resun Solar RS9H-M-DG has a 30 years power warranty; Resun Solar RS9H-M-DG-705 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.
Are Resun Solar RS9H-M-DG and Resun Solar RS9H-M-DG-705 bifacial panels?
Both Resun Solar RS9H-M-DG and Resun Solar RS9H-M-DG-705 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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.