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JKM640N-66HL4M-BDV-Z4-EU vs JKM710-735N-66HL5-BDV-Z3-EU (725W bin) 11 of 19 identical Swap Change panels

Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)

Jinko Solar JKM640N-66HL4M-BDV-Z4-EU
JKM640N-66HL4M-BDV-Z4-EU
640 Wp 23.69 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
725 Wp 23.34 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JKM640N-66HL4M-BDV-Z4-EU leads on the differences that matter

The largest is rated power: 85 W more power. 11 of 19 comparable parameters are identical.

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

What actually differs

8 of 19 parameters
Parameter JKM640N-66HL4M-BDV-Z4-EU JKM710-735N-66HL5-BDV-Z3-EU (725W bin) Difference
Rated power 640 Wp 725 Wp 85 W more power
Weight 32.4 kg 37.5 kg 5.1 kg lighter
Module efficiency 23.69 % 23.34 % 0.35 pp more efficient
Short-circuit current 16.32 A 18.74 A 2.42 A apart
Module area 2.701 m² 3.106 m² 0.405 m² apart
Power density 236.9 Wp/m² 233.4 Wp/m² 3.5 Wp/m² higher
Current at max power 15.50 A 17.69 A 2.19 A apart
Dimensions 2382x1134x30 mm 2384x1303x33 mm 2382x1134x30 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.
JKM640N-66HL4M-BDV-Z4-EU
21,473 kWh
JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
24,325 kWh
Lifetime gap
2,852 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM640N-66HL4M-BDV-Z4-EU JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
Standard test conditions 25 °C 100.0% of rated power 640 W 725 W
Cool, bright day 40 °C 95.7% of rated power 612 W 693 W
Typical summer roof 55 °C 91.3% of rated power 584 W 662 W
Hot roof 70 °C 87.0% of rated power 556 W 630 W
03

Full specification

Parameter JKM640N-66HL4M-BDV-Z4-EU JKM710-735N-66HL5-BDV-Z3-EU (725W bin) Difference
Power and efficiency
Rated power 640 Wp 725 Wp +85 W for JKM710-735N-66HL5-BDV-Z3-EU (725W bin)
Module efficiency 23.69 % 23.34 % +0.35 pp for JKM640N-66HL4M-BDV-Z4-EU
Power density 236.9 Wp/m² 233.4 Wp/m² +3.5 Wp/m² for JKM640N-66HL4M-BDV-Z4-EU
Open-circuit voltage 49.88 V 49.20 V Effectively the same
Voltage at max power 41.30 V 41.00 V Effectively the same
Short-circuit current 16.32 A 18.74 A 2.42 A apart
Current at max power 15.50 A 17.69 A 2.19 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 2384x1303x33 mm 2382x1134x30 mm vs 2384x1303x33 mm
Module area 2.701 m² 3.106 m² 0.405 m² apart
Weight 32.4 kg 37.5 kg -5.1 kg for JKM640N-66HL4M-BDV-Z4-EU
Weight per kWp 50.6 kg/kWp 51.7 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 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#580 vs #943
JKM640N-66HL4M-BDV-Z4-EU leads by 363 places
Power density
#521 vs #936
JKM640N-66HL4M-BDV-Z4-EU leads by 415 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#4,069 vs #5,085
JKM640N-66HL4M-BDV-Z4-EU leads by 1,016 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,530 vs #397
JKM710-735N-66HL5-BDV-Z3-EU (725W bin) leads by 1,133 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)
6 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU
6 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM735N-66HL5-BDV-Z6-EU
6 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin)
6 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM730N-66HL5-BDV-Z3-EU
6 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU vs Jinko Solar JKM730N-66HL5-BDV-Z6-EU
6 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM640N-66HL4M-BDV-Z4-EU or Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)?
According to our database: Jinko Solar JKM640N-66HL4M-BDV-Z4-EU has higher module efficiency (23.69% vs 23.34%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM640N-66HL4M-BDV-Z4-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)?
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU has a module efficiency of 23.69%, while Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725 W bin) is 23.34%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM640N-66HL4M-BDV-Z4-EU use vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)?
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU uses TOPCon cells; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725 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 JKM640N-66HL4M-BDV-Z4-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)?
Jinko Solar JKM640N-66HL4M-BDV-Z4-EU has a 30 years power warranty; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725 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 JKM640N-66HL4M-BDV-Z4-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin) bifacial panels?
Both Jinko Solar JKM640N-66HL4M-BDV-Z4-EU and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725 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 160 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.