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720-BHC-BG vs 705-BHC-BG 16 of 19 identical Swap Change panels

Seraphim SRP-720-BHC-BG vs Seraphim SRP-705-BHC-BG

Seraphim SRP-720-BHC-BG
SRP-720-BHC-BG
720 Wp 23.18 % HJT Bifacial
Open panel page Datasheet PDF
VS
Seraphim SRP-705-BHC-BG
SRP-705-BHC-BG
705 Wp 22.70 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

720-BHC-BG leads on the differences that matter

The largest is module efficiency: 0.48 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 720-BHC-BG 705-BHC-BG Difference
Module efficiency 23.18 % 22.70 % 0.48 pp more efficient
Power density 231.8 Wp/m² 227.0 Wp/m² 4.8 Wp/m² higher
Rated power 720 Wp 705 Wp 15 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 (-0.258 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
720-BHC-BG
24,533 kWh
705-BHC-BG
24,022 kWh
Lifetime gap
511 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 720-BHC-BG 705-BHC-BG
Standard test conditions 25 °C 100.0% of rated power 720 W 705 W
Cool, bright day 40 °C 96.1% of rated power 692 W 678 W
Typical summer roof 55 °C 92.3% of rated power 664 W 650 W
Hot roof 70 °C 88.4% of rated power 636 W 623 W
03

Full specification

Parameter 720-BHC-BG 705-BHC-BG Difference
Power and efficiency
Rated power 720 Wp 705 Wp +15 W for 720-BHC-BG
Module efficiency 23.18 % 22.70 % +0.48 pp for 720-BHC-BG
Power density 231.8 Wp/m² 227.0 Wp/m² +4.8 Wp/m² for 720-BHC-BG
Open-circuit voltage 50.80 V 50.32 V Effectively the same
Voltage at max power 42.78 V 42.30 V Effectively the same
Short-circuit current 17.68 A 17.50 A Effectively the same
Current at max power 16.88 A 16.70 A Effectively the same
Temperature
Temperature coefficient -0.258 %/°C -0.258 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x33 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.5 kg 38.5 kg Same
Weight per kWp 53.5 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 0.30 %/yr 0.30 %/yr Same
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,424 vs #3,307
720-BHC-BG leads by 1,883 places
Power density
#1,347 vs #3,361
720-BHC-BG leads by 2,014 places
Heat behaviour
#466 vs #466
Tied - the same position in the database
Weight
#7,424 vs #8,959
720-BHC-BG leads by 1,535 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#362 vs #771
720-BHC-BG leads by 409 places
05

More useful comparisons

Open the full database
Same series, other bin
Seraphim SRP-720-BHC-BG vs Seraphim SRP-730-BHC-BG
3 differences, the largest is module efficiency
Same series, other bin
Seraphim SRP-720-BHC-BG vs Seraphim SRP-725-BHC-BG
The same specification on paper
Same series, other bin
Seraphim SRP-720-BHC-BG vs Seraphim SRP-715-BHC-BG
The same specification on paper
Same series, other bin
Seraphim SRP-720-BHC-BG vs Seraphim SRP-710-BHC-BG
3 differences, the largest is module efficiency
Same manufacturer
Seraphim SRP-720-BHC-BG vs Seraphim SRP-720-BTC-BG
7 differences, the largest is temperature coefficient
Same manufacturer
Seraphim SRP-720-BHC-BG vs Seraphim SRP-715-BTC-BG
7 differences, the largest is temperature coefficient
06

Written summary

07

Questions about this pairing

Which panel is better: Seraphim SRP-720-BHC-BG or Seraphim SRP-705-BHC-BG?
According to our database: Seraphim SRP-720-BHC-BG has higher module efficiency (23.18% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Seraphim SRP-720-BHC-BG and Seraphim SRP-705-BHC-BG?
Seraphim SRP-720-BHC-BG has a module efficiency of 23.18%, while Seraphim SRP-705-BHC-BG is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Seraphim SRP-720-BHC-BG use vs Seraphim SRP-705-BHC-BG?
Seraphim SRP-720-BHC-BG uses HJT cells; Seraphim SRP-705-BHC-BG uses HJT. 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 Seraphim SRP-720-BHC-BG and Seraphim SRP-705-BHC-BG?
Seraphim SRP-720-BHC-BG has a 30 years power warranty; Seraphim SRP-705-BHC-BG 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 Seraphim SRP-720-BHC-BG and Seraphim SRP-705-BHC-BG bifacial panels?
Both Seraphim SRP-720-BHC-BG and Seraphim SRP-705-BHC-BG 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 4 Seraphim 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.