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JKM425N-54HL4-B vs JKM735N-66HL5-BDV-Z6-EU 6 of 19 identical Swap Change panels

Jinko Solar JKM425N-54HL4-B vs Jinko Solar JKM735N-66HL5-BDV-Z6-EU

Jinko Solar JKM425N-54HL4-B
JKM425N-54HL4-B
425 Wp 21.76 % TOPCon
Open panel page Datasheet PDF
VS
Jinko Solar JKM735N-66HL5-BDV-Z6-EU
JKM735N-66HL5-BDV-Z6-EU
735 Wp 23.66 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

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

The largest is module efficiency: 1.90 pp more efficient. 6 of 19 comparable parameters are identical.

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

What actually differs

13 of 19 parameters
Parameter JKM425N-54HL4-B JKM735N-66HL5-BDV-Z6-EU Difference
Module efficiency 21.76 % 23.66 % 1.90 pp more efficient
Rated power 425 Wp 735 Wp 310 W more power
Power density 217.6 Wp/m² 236.6 Wp/m² 19.0 Wp/m² higher
Weight 21.0 kg 37.5 kg 16.5 kg lighter
Product warranty 25 yrs 12 yrs 13 yrs longer
Open-circuit voltage 38.95 V 49.52 V 10.57 V apart
Short-circuit current 13.58 A 18.88 A 5.30 A apart
Module area 1.953 m² 3.106 m² 1.154 m² apart
Voltage at max power 32.37 V 41.23 V 8.86 V apart
Current at max power 13.13 A 17.83 A 4.70 A apart
Cell count 108 132 24 cells apart
Bifacial No Yes No vs Yes
Dimensions 1722x1134x35 mm 2384x1303x33 mm 1722x1134x35 mm vs 2384x1303x33 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.
JKM425N-54HL4-B
14,260 kWh
JKM735N-66HL5-BDV-Z6-EU
24,661 kWh
Lifetime gap
10,401 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM425N-54HL4-B JKM735N-66HL5-BDV-Z6-EU
Standard test conditions 25 °C 100.0% of rated power 425 W 735 W
Cool, bright day 40 °C 95.7% of rated power 407 W 703 W
Typical summer roof 55 °C 91.3% of rated power 388 W 671 W
Hot roof 70 °C 87.0% of rated power 370 W 639 W
03

Full specification

Parameter JKM425N-54HL4-B JKM735N-66HL5-BDV-Z6-EU Difference
Power and efficiency
Rated power 425 Wp 735 Wp +310 W for JKM735N-66HL5-BDV-Z6-EU
Module efficiency 21.76 % 23.66 % +1.90 pp for JKM735N-66HL5-BDV-Z6-EU
Power density 217.6 Wp/m² 236.6 Wp/m² +19.0 Wp/m² for JKM735N-66HL5-BDV-Z6-EU
Open-circuit voltage 38.95 V 49.52 V 10.57 V apart
Voltage at max power 32.37 V 41.23 V 8.86 V apart
Short-circuit current 13.58 A 18.88 A 5.30 A apart
Current at max power 13.13 A 17.83 A 4.70 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1722x1134x35 mm 2384x1303x33 mm 1722x1134x35 mm vs 2384x1303x33 mm
Module area 1.953 m² 3.106 m² 1.154 m² apart
Weight 21.0 kg 37.5 kg -16.5 kg for JKM425N-54HL4-B
Weight per kWp 49.4 kg/kWp 51.0 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 12 yrs +13 yrs for JKM425N-54HL4-B
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 108 132 24 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#7,285 vs #602
JKM735N-66HL5-BDV-Z6-EU leads by 6,683 places
Power density
#7,172 vs #582
JKM735N-66HL5-BDV-Z6-EU leads by 6,590 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,909 vs #4,360
JKM425N-54HL4-B leads by 1,451 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,986 vs #239
JKM735N-66HL5-BDV-Z6-EU leads by 7,747 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM425N-54HL4-B vs Jinko Solar JKM440N-54HL4-B
3 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM425N-54HL4-B vs Jinko Solar JKM435N-54HL4-B
3 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM425N-54HL4-B vs Jinko Solar JKM430N-54HL4-B
One difference: module efficiency
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
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM425N-54HL4-B or Jinko Solar JKM735N-66HL5-BDV-Z6-EU?
According to our database: Jinko Solar JKM735N-66HL5-BDV-Z6-EU has higher module efficiency (23.66% vs 21.76%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM425N-54HL4-B and Jinko Solar JKM735N-66HL5-BDV-Z6-EU?
Jinko Solar JKM425N-54HL4-B has a module efficiency of 21.76%, while Jinko Solar JKM735N-66HL5-BDV-Z6-EU is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM425N-54HL4-B use vs Jinko Solar JKM735N-66HL5-BDV-Z6-EU?
Jinko Solar JKM425N-54HL4-B uses TOPCon cells; Jinko Solar JKM735N-66HL5-BDV-Z6-EU 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 Jinko Solar JKM425N-54HL4-B and Jinko Solar JKM735N-66HL5-BDV-Z6-EU?
Jinko Solar JKM425N-54HL4-B has a 30 years power warranty; Jinko Solar JKM735N-66HL5-BDV-Z6-EU 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 JKM425N-54HL4-B and Jinko Solar JKM735N-66HL5-BDV-Z6-EU bifacial panels?
Jinko Solar JKM735N-66HL5-BDV-Z6-EU is bifacial (captures light from both faces); Jinko Solar JKM425N-54HL4-B is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 171 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.