705-8DBNM vs 730-8DBNM 16 of 19 identical Swap Change panels

Recom RCM-705-8DBNM vs Recom RCM-730-8DBNM

Q: Which panel is better: Recom RCM-705-8DBNM or Recom RCM-730-8DBNM?

According to our database: Recom RCM-730-8DBNM has higher module efficiency (23.50% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Recom RCM-705-8DBNM and Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM has a module efficiency of 22.70%, while Recom RCM-730-8DBNM is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Recom RCM-705-8DBNM use vs Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM uses TOPCon cells; Recom RCM-730-8DBNM uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Recom RCM-705-8DBNM and Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM has a 30 years power warranty; Recom RCM-730-8DBNM 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.

Q: Are Recom RCM-705-8DBNM and Recom RCM-730-8DBNM bifacial panels?

Both Recom RCM-705-8DBNM and Recom RCM-730-8DBNM 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.

Recom

RCM-705-8DBNM

705 Wp 22.70 % TOPCon Bifacial

Open panel page Datasheet PDF

Recom

RCM-730-8DBNM

730 Wp 23.50 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

730-8DBNM leads on the differences that matter

The largest is module efficiency: 0.80 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

What actually differs

3 of 19 parameters

Parameter 705-8DBNM 730-8DBNM Difference

Module efficiency 22.70 % 23.50 % 0.80 pp more efficient

Power density 227.0 Wp/m² 235.0 Wp/m² 8.0 Wp/m² higher

Rated power 705 Wp 730 Wp 25 W more power

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

705-8DBNM

23,654 kWh

730-8DBNM

24,493 kWh

Lifetime gap

839 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 705-8DBNM 730-8DBNM

Standard test conditions 25 °C 100.0% of rated power 705 W 730 W

Cool, bright day 40 °C 95.7% of rated power 674 W 698 W

Typical summer roof 55 °C 91.3% of rated power 644 W 666 W

Hot roof 70 °C 87.0% of rated power 613 W 635 W

Full specification

Parameter 705-8DBNM 730-8DBNM Difference

Power and efficiency

Rated power 705 Wp 730 Wp +25 W for 730-8DBNM

Module efficiency 22.70 % 23.50 % +0.80 pp for 730-8DBNM

Power density 227.0 Wp/m² 235.0 Wp/m² +8.0 Wp/m² for 730-8DBNM

Open-circuit voltage 48.69 V 49.59 V Effectively the same

Voltage at max power 40.59 V 41.44 V Effectively the same

Short-circuit current 18.38 A 18.64 A Effectively the same

Current at max power 17.37 A 17.62 A Effectively the same

Temperature

Temperature coefficient -0.290 %/°C -0.290 %/°C Same

Mechanical

Dimensions 2384x1303x33 mm 2384x1303x33 mm Same

Module area 3.106 m² 3.106 m² Same

Weight 37.8 kg 37.8 kg Same

Weight per kWp 53.6 kg/kWp 51.8 kg/kWp Effectively the same

Warranty and degradation

Product warranty 30 yrs 30 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 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#3,307 vs #716

730-8DBNM leads by 2,591 places

Power density

#3,361 vs #800

730-8DBNM leads by 2,561 places

Heat behaviour

#2,165 vs #2,165

Tied - the same position in the database

Weight

#7,628 vs #5,151

730-8DBNM leads by 2,477 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#83 vs #8

730-8DBNM leads by 75 places

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Written summary

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Questions about this pairing

Which panel is better: Recom RCM-705-8DBNM or Recom RCM-730-8DBNM?

According to our database: Recom RCM-730-8DBNM has higher module efficiency (23.50% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Recom RCM-705-8DBNM and Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM has a module efficiency of 22.70%, while Recom RCM-730-8DBNM is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Recom RCM-705-8DBNM use vs Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM uses TOPCon cells; Recom RCM-730-8DBNM 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 Recom RCM-705-8DBNM and Recom RCM-730-8DBNM?

Recom RCM-705-8DBNM has a 30 years power warranty; Recom RCM-730-8DBNM 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 Recom RCM-705-8DBNM and Recom RCM-730-8DBNM bifacial panels?

Both Recom RCM-705-8DBNM and Recom RCM-730-8DBNM 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.

Shop prices: See 3 Recom offers

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.