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JKM645N-78HL4-BDV-F9-EU vs JKM710-735N-66HL5-BDV-Z3-EU (735W bin) 8 of 19 identical Swap Change panels

Jinko Solar JKM645N-78HL4-BDV-F9-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)

Jinko Solar JKM645N-78HL4-BDV-F9-EU
JKM645N-78HL4-BDV-F9-EU
645 Wp 23.07 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
735 Wp 23.66 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JKM710-735N-66HL5-BDV-Z3-EU (735W bin) leads on the differences that matter

The largest is rated power: 90 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 JKM645N-78HL4-BDV-F9-EU JKM710-735N-66HL5-BDV-Z3-EU (735W bin) Difference
Rated power 645 Wp 735 Wp 90 W more power
Module efficiency 23.07 % 23.66 % 0.59 pp more efficient
Weight 34.0 kg 37.5 kg 3.5 kg lighter
Open-circuit voltage 57.47 V 49.52 V 7.95 V apart
Short-circuit current 14.04 A 18.88 A 4.84 A apart
Module area 2.795 m² 3.106 m² 0.311 m² apart
Power density 230.7 Wp/m² 236.6 Wp/m² 5.9 Wp/m² higher
Voltage at max power 48.17 V 41.23 V 6.94 V apart
Current at max power 13.39 A 17.83 A 4.44 A apart
Cell count 156 132 24 cells apart
Dimensions 2465x1134x30 mm 2384x1303x33 mm 2465x1134x30 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.
JKM645N-78HL4-BDV-F9-EU
21,641 kWh
JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
24,661 kWh
Lifetime gap
3,020 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM645N-78HL4-BDV-F9-EU JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
Standard test conditions 25 °C 100.0% of rated power 645 W 735 W
Cool, bright day 40 °C 95.7% of rated power 617 W 703 W
Typical summer roof 55 °C 91.3% of rated power 589 W 671 W
Hot roof 70 °C 87.0% of rated power 561 W 639 W
03

Full specification

Parameter JKM645N-78HL4-BDV-F9-EU JKM710-735N-66HL5-BDV-Z3-EU (735W bin) Difference
Power and efficiency
Rated power 645 Wp 735 Wp +90 W for JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
Module efficiency 23.07 % 23.66 % +0.59 pp for JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
Power density 230.7 Wp/m² 236.6 Wp/m² +5.9 Wp/m² for JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
Open-circuit voltage 57.47 V 49.52 V 7.95 V apart
Voltage at max power 48.17 V 41.23 V 6.94 V apart
Short-circuit current 14.04 A 18.88 A 4.84 A apart
Current at max power 13.39 A 17.83 A 4.44 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2465x1134x30 mm 2384x1303x33 mm 2465x1134x30 mm vs 2384x1303x33 mm
Module area 2.795 m² 3.106 m² 0.311 m² apart
Weight 34.0 kg 37.5 kg -3.5 kg for JKM645N-78HL4-BDV-F9-EU
Weight per kWp 52.7 kg/kWp 51.0 kg/kWp Effectively the same
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 TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 156 132 24 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,683 vs #602
JKM710-735N-66HL5-BDV-Z3-EU (735W bin) leads by 1,081 places
Power density
#1,654 vs #582
JKM710-735N-66HL5-BDV-Z3-EU (735W bin) leads by 1,072 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#6,362 vs #4,360
JKM710-735N-66HL5-BDV-Z3-EU (735W bin) leads by 2,002 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,852 vs #239
JKM710-735N-66HL5-BDV-Z3-EU (735W bin) leads by 1,613 places
05

More useful comparisons

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Jinko Solar JKM645N-78HL4-BDV-F9-EU vs Jinko Solar JKM625N-78HL4-BDV-F9-EU
3 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin) vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM645N-78HL4-BDV-F9-EU or Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)?
According to our database: Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735 W bin) has higher module efficiency (23.66% vs 23.07%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM645N-78HL4-BDV-F9-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)?
Jinko Solar JKM645N-78HL4-BDV-F9-EU has a module efficiency of 23.07%, while Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735 W bin) is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM645N-78HL4-BDV-F9-EU use vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)?
Jinko Solar JKM645N-78HL4-BDV-F9-EU uses TOPCon cells; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735 W bin) 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 JKM645N-78HL4-BDV-F9-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)?
Jinko Solar JKM645N-78HL4-BDV-F9-EU has a 30 years power warranty; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735 W bin) 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 JKM645N-78HL4-BDV-F9-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin) bifacial panels?
Both Jinko Solar JKM645N-78HL4-BDV-F9-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735 W bin) 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 170 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.