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JKM735N-66HL5-BDV-Z6-EU vs JKM615-635N-78HL4-(V)-F6-EN (635W variant) 5 of 19 identical Swap Change panels

Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)

Jinko Solar JKM735N-66HL5-BDV-Z6-EU
JKM735N-66HL5-BDV-Z6-EU
735 Wp 23.66 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
JKM615-635N-78HL4-(V)-F6-EN (635W variant)
635 Wp 22.72 % N-type
Open panel page Datasheet PDF
The verdict

JKM735N-66HL5-BDV-Z6-EU leads on the differences that matter

The largest is module efficiency: 0.94 pp more efficient. 5 of 19 comparable parameters are identical.

See all 14 differences
How alike are they
5 of 19 comparable
parameters are identical
identical differs
01

What actually differs

14 of 19 parameters
Parameter JKM735N-66HL5-BDV-Z6-EU JKM615-635N-78HL4-(V)-F6-EN (635W variant) Difference
Module efficiency 23.66 % 22.72 % 0.94 pp more efficient
Rated power 735 Wp 635 Wp 100 W more power
Power density 236.6 Wp/m² 227.2 Wp/m² 9.4 Wp/m² higher
Weight 37.5 kg 29.5 kg 8.0 kg lighter
Open-circuit voltage 49.52 V 56.85 V 7.33 V apart
Short-circuit current 18.88 A 14.04 A 4.84 A apart
Module area 3.106 m² 2.795 m² 0.311 m² apart
Weight per kWp 51.0 kg/kWp 46.5 kg/kWp 4.6 kg/kWp lighter
Cell technology TOPCon N-type TOPCon vs N-type
Voltage at max power 41.23 V 47.46 V 6.23 V apart
Current at max power 17.83 A 13.38 A 4.45 A apart
Cell count 132 156 24 cells apart
Bifacial Yes No Yes vs No
Dimensions 2384x1303x33 mm 2465x1134x35 mm 2384x1303x33 mm vs 2465x1134x35 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.
JKM735N-66HL5-BDV-Z6-EU
24,661 kWh
JKM615-635N-78HL4-(V)-F6-EN (635W variant)
21,306 kWh
Lifetime gap
3,355 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM735N-66HL5-BDV-Z6-EU JKM615-635N-78HL4-(V)-F6-EN (635W variant)
Standard test conditions 25 °C 100.0% of rated power 735 W 635 W
Cool, bright day 40 °C 95.7% of rated power 703 W 607 W
Typical summer roof 55 °C 91.3% of rated power 671 W 580 W
Hot roof 70 °C 87.0% of rated power 639 W 552 W
03

Full specification

Parameter JKM735N-66HL5-BDV-Z6-EU JKM615-635N-78HL4-(V)-F6-EN (635W variant) Difference
Power and efficiency
Rated power 735 Wp 635 Wp +100 W for JKM735N-66HL5-BDV-Z6-EU
Module efficiency 23.66 % 22.72 % +0.94 pp for JKM735N-66HL5-BDV-Z6-EU
Power density 236.6 Wp/m² 227.2 Wp/m² +9.4 Wp/m² for JKM735N-66HL5-BDV-Z6-EU
Open-circuit voltage 49.52 V 56.85 V 7.33 V apart
Voltage at max power 41.23 V 47.46 V 6.23 V apart
Short-circuit current 18.88 A 14.04 A 4.84 A apart
Current at max power 17.83 A 13.38 A 4.45 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2465x1134x35 mm 2384x1303x33 mm vs 2465x1134x35 mm
Module area 3.106 m² 2.795 m² 0.311 m² apart
Weight 37.5 kg 29.5 kg -8.0 kg for JKM615-635N-78HL4-(V)-F6-EN (635W variant)
Weight per kWp 51.0 kg/kWp 46.5 kg/kWp -4.6 kg/kWp for JKM615-635N-78HL4-(V)-F6-EN (635W variant)
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon N-type TOPCon vs N-type
Cell type Monocrystalline Monocrystalline Same
Cell count 132 156 24 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#602 vs #3,245
JKM735N-66HL5-BDV-Z6-EU leads by 2,643 places
Power density
#582 vs #3,252
JKM735N-66HL5-BDV-Z6-EU leads by 2,670 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#4,360 vs #1,173
JKM615-635N-78HL4-(V)-F6-EN (635W variant) leads by 3,187 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#239 vs #2,249
JKM735N-66HL5-BDV-Z6-EU leads by 2,010 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
The same specification on paper
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU
The same specification on paper
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin)
The same specification on paper
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM730N-66HL5-BDV-Z3-EU
The same specification on paper
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM730N-66HL5-BDV-Z6-EU
The same specification on paper
Same series, other bin
Jinko Solar JKM735N-66HL5-BDV-Z6-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM735N-66HL5-BDV-Z6-EU or Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?
According to our database: Jinko Solar JKM735N-66HL5-BDV-Z6-EU has higher module efficiency (23.66% vs 22.72%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?
Jinko Solar JKM735N-66HL5-BDV-Z6-EU has a module efficiency of 23.66%, while Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635 W variant) is 22.72%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM735N-66HL5-BDV-Z6-EU use vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?
Jinko Solar JKM735N-66HL5-BDV-Z6-EU uses TOPCon cells; Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635 W variant) uses N-type. 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 Jinko Solar JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)?
Jinko Solar JKM735N-66HL5-BDV-Z6-EU has a 30 years power warranty; Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635 W variant) 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 Jinko Solar JKM735N-66HL5-BDV-Z6-EU and Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant) bifacial panels?
Jinko Solar JKM735N-66HL5-BDV-Z6-EU is bifacial (captures light from both faces); Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635 W variant) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 176 Jinko Solar 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.