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690-BTC-BG vs 450-BTE-BG 8 of 19 identical Swap Change panels

Seraphim SRP-690-BTC-BG vs Seraphim SRP-450-BTE-BG

SRP-690-BTC-BG
690 Wp 22.21 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Seraphim SRP-450-BTE-BG
SRP-450-BTE-BG
450 Wp 22.52 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is rated power: 240 W more power. 8 of 19 comparable parameters are identical.

See all 11 differences
How alike are they
8 of 19 comparable
parameters are identical
identical differs
01

What actually differs

11 of 19 parameters
Parameter 690-BTC-BG 450-BTE-BG Difference
Rated power 690 Wp 450 Wp 240 W more power
Weight 38.5 kg 24.9 kg 13.6 kg lighter
Open-circuit voltage 48.10 V 35.78 V 12.32 V apart
Short-circuit current 18.24 A 15.90 A 2.34 A apart
Module area 3.106 m² 1.998 m² 1.108 m² apart
Module efficiency 22.21 % 22.52 % 0.31 pp more efficient
Power density 222.1 Wp/m² 225.2 Wp/m² 3.1 Wp/m² higher
Voltage at max power 40.13 V 29.81 V 10.32 V apart
Current at max power 17.20 A 15.10 A 2.10 A apart
Cell count 132 96 36 cells apart
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 mm
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.
690-BTC-BG
23,151 kWh
450-BTE-BG
15,098 kWh
Lifetime gap
8,053 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 690-BTC-BG 450-BTE-BG
Standard test conditions 25 °C 100.0% of rated power 690 W 450 W
Cool, bright day 40 °C 95.7% of rated power 660 W 430 W
Typical summer roof 55 °C 91.3% of rated power 630 W 411 W
Hot roof 70 °C 87.0% of rated power 600 W 391 W
03

Full specification

Parameter 690-BTC-BG 450-BTE-BG Difference
Power and efficiency
Rated power 690 Wp 450 Wp +240 W for 690-BTC-BG
Module efficiency 22.21 % 22.52 % +0.31 pp for 450-BTE-BG
Power density 222.1 Wp/m² 225.2 Wp/m² +3.1 Wp/m² for 450-BTE-BG
Open-circuit voltage 48.10 V 35.78 V 12.32 V apart
Voltage at max power 40.13 V 29.81 V 10.32 V apart
Short-circuit current 18.24 A 15.90 A 2.34 A apart
Current at max power 17.20 A 15.10 A 2.10 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 mm
Module area 3.106 m² 1.998 m² 1.108 m² apart
Weight 38.5 kg 24.9 kg -13.6 kg for 450-BTE-BG
Weight per kWp 55.8 kg/kWp 55.3 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 96 36 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,754 vs #4,108
450-BTE-BG leads by 1,646 places
Power density
#5,734 vs #4,225
450-BTE-BG leads by 1,509 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#10,180 vs #9,790
450-BTE-BG leads by 390 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,286 vs #8,500
690-BTC-BG leads by 7,214 places
05

More useful comparisons

Open the full database
Same series, other bin
Seraphim SRP-690-BTC-BG vs Seraphim SRP-685-BTC-BG
The same specification on paper
Same series, other bin
Seraphim SRP-450-BTE-BG vs Seraphim SRP-720-BTC-BG
11 differences, the largest is module efficiency
Same series, other bin
Seraphim SRP-450-BTE-BG vs Seraphim SRP-715-BTC-BG
11 differences, the largest is rated power
Same series, other bin
Seraphim SRP-450-BTE-BG vs Seraphim SRP-710-BTC-BG
11 differences, the largest is rated power
Same series, other bin
Seraphim SRP-450-BTE-BG vs Seraphim SRP-705-BTC-BG
9 differences, the largest is rated power
Same series, other bin
Seraphim SRP-450-BTE-BG vs Seraphim SRP-700-BTC-BG
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Seraphim SRP-690-BTC-BG or Seraphim SRP-450-BTE-BG?
According to our database: Seraphim SRP-450-BTE-BG has higher module efficiency (22.52% vs 22.21%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Seraphim SRP-690-BTC-BG and Seraphim SRP-450-BTE-BG?
Seraphim SRP-690-BTC-BG has a module efficiency of 22.21%, while Seraphim SRP-450-BTE-BG is 22.52%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Seraphim SRP-690-BTC-BG use vs Seraphim SRP-450-BTE-BG?
Seraphim SRP-690-BTC-BG uses TOPCon cells; Seraphim SRP-450-BTE-BG 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 Seraphim SRP-690-BTC-BG and Seraphim SRP-450-BTE-BG?
Seraphim SRP-690-BTC-BG has a 30 years power warranty; Seraphim SRP-450-BTE-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-690-BTC-BG and Seraphim SRP-450-BTE-BG bifacial panels?
Both Seraphim SRP-690-BTC-BG and Seraphim SRP-450-BTE-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 5 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.