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705 vs 735 13 of 19 identical Swap Change panels

Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-735

CHSM66N(DG)/F-BH-705
705 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Astronergy CHSM66N(DG)/F-BH-735
CHSM66N(DG)/F-BH-735
735 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

735 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter 705 735 Difference
Module efficiency 22.70 % 23.70 % 1.00 pp more efficient
Power density 227.0 Wp/m² 236.6 Wp/m² 9.7 Wp/m² higher
Rated power 705 Wp 735 Wp 30 W more power
Weight per kWp 53.9 kg/kWp 51.7 kg/kWp 2.2 kg/kWp lighter
Open-circuit voltage 48.57 V 49.77 V 1.20 V apart
Voltage at max power 40.31 V 41.41 V 1.10 V apart
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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
705
23,654 kWh
735
24,661 kWh
Lifetime gap
1,007 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 705 735
Standard test conditions 25 °C 100.0% of rated power 705 W 735 W
Cool, bright day 40 °C 95.7% of rated power 674 W 703 W
Typical summer roof 55 °C 91.3% of rated power 644 W 671 W
Hot roof 70 °C 87.0% of rated power 613 W 639 W
03

Full specification

Parameter 705 735 Difference
Power and efficiency
Rated power 705 Wp 735 Wp +30 W for 735
Module efficiency 22.70 % 23.70 % +1.00 pp for 735
Power density 227.0 Wp/m² 236.6 Wp/m² +9.7 Wp/m² for 735
Open-circuit voltage 48.57 V 49.77 V 1.20 V apart
Voltage at max power 40.31 V 41.41 V 1.10 V apart
Short-circuit current 18.43 A 18.72 A Effectively the same
Current at max power 17.49 A 17.75 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 38.0 kg 38.0 kg Same
Weight per kWp 53.9 kg/kWp 51.7 kg/kWp -2.2 kg/kWp for 735
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 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,307 vs #517
735 leads by 2,790 places
Power density
#3,361 vs #582
735 leads by 2,779 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,027 vs #5,081
735 leads by 2,946 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#747 vs #160
735 leads by 587 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-730
4 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-725
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-720
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-715
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66N(DG)/F-BH-710
One difference: module efficiency
Same manufacturer
Astronergy CHSM66N(DG)/F-BH-705 vs Astronergy CHSM66RN(DG)/F-BQ-670
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM66N(DG)/F-BH-705 or Astronergy CHSM66N(DG)/F-BH-735?
According to our database: Astronergy CHSM66N(DG)/F-BH-735 has higher module efficiency (23.70% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM66N(DG)/F-BH-705 and Astronergy CHSM66N(DG)/F-BH-735?
Astronergy CHSM66N(DG)/F-BH-705 has a module efficiency of 22.70%, while Astronergy CHSM66N(DG)/F-BH-735 is 23.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM66N(DG)/F-BH-705 use vs Astronergy CHSM66N(DG)/F-BH-735?
Astronergy CHSM66N(DG)/F-BH-705 uses TOPCon cells; Astronergy CHSM66N(DG)/F-BH-735 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 Astronergy CHSM66N(DG)/F-BH-705 and Astronergy CHSM66N(DG)/F-BH-735?
Astronergy CHSM66N(DG)/F-BH-705 has a 30 years power warranty; Astronergy CHSM66N(DG)/F-BH-735 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 Astronergy CHSM66N(DG)/F-BH-705 and Astronergy CHSM66N(DG)/F-BH-735 bifacial panels?
Both Astronergy CHSM66N(DG)/F-BH-705 and Astronergy CHSM66N(DG)/F-BH-735 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.

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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.