JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs JKM640N-66HL4M-BDV-Z4-EU 13 of 19 identical Swap Change panels

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM640N-66HL4M-BDV-Z4-EU

Q: Which panel is better: Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) or Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

According to our database: Jinko Solar JKM640N-66HL4M-BDV-Z4-EU has higher module efficiency (23.69% vs 23.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) has a module efficiency of 23.50%, while Jinko Solar JKM640N-66HL4M-BDV-Z4-EU is 23.69%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) use vs Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) uses TOPCon cells; Jinko Solar JKM640N-66HL4M-BDV-Z4-EU uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) has a 30 years power warranty; Jinko Solar JKM640N-66HL4M-BDV-Z4-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.

Q: Are Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU bifacial panels?

Both Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU 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.

JKM710-735N-66HL5-BDV-Z3-EU (730W bin)

730 Wp 23.50 % TOPCon Bifacial

Open panel page Datasheet PDF

JKM640N-66HL4M-BDV-Z4-EU

640 Wp 23.69 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

6 differences, and they point both ways

The largest is rated power: 90 W more power. 13 of 19 comparable parameters are identical.

See all 6 differences

How alike are they

13 of 19 comparable
parameters are identical

identical differs

What actually differs

6 of 19 parameters

Parameter JKM710-735N-66HL5-BDV-Z3-EU (730W bin) JKM640N-66HL4M-BDV-Z4-EU Difference

Rated power 730 Wp 640 Wp 90 W more power

Weight 37.5 kg 32.4 kg 5.1 kg lighter

Short-circuit current 18.81 A 16.32 A 2.49 A apart

Module area 3.106 m² 2.701 m² 0.405 m² apart

Current at max power 17.76 A 15.50 A 2.26 A apart

Dimensions 2384x1303x33 mm 2382x1134x30 mm 2384x1303x33 mm vs 2382x1134x30 mm

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

JKM710-735N-66HL5-BDV-Z3-EU (730W bin)

24,493 kWh

JKM640N-66HL4M-BDV-Z4-EU

21,473 kWh

Lifetime gap

3,020 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario JKM710-735N-66HL5-BDV-Z3-EU (730W bin) JKM640N-66HL4M-BDV-Z4-EU

Standard test conditions 25 °C 100.0% of rated power 730 W 640 W

Cool, bright day 40 °C 95.7% of rated power 698 W 612 W

Typical summer roof 55 °C 91.3% of rated power 666 W 584 W

Hot roof 70 °C 87.0% of rated power 635 W 556 W

Full specification

Parameter JKM710-735N-66HL5-BDV-Z3-EU (730W bin) JKM640N-66HL4M-BDV-Z4-EU Difference

Power and efficiency

Rated power 730 Wp 640 Wp +90 W for JKM710-735N-66HL5-BDV-Z3-EU (730W bin)

Module efficiency 23.50 % 23.69 % Effectively the same

Power density 235.0 Wp/m² 236.9 Wp/m² Effectively the same

Open-circuit voltage 49.36 V 49.88 V Effectively the same

Voltage at max power 41.11 V 41.30 V Effectively the same

Short-circuit current 18.81 A 16.32 A 2.49 A apart

Current at max power 17.76 A 15.50 A 2.26 A apart

Temperature

Temperature coefficient -0.290 %/°C -0.290 %/°C Same

Mechanical

Dimensions 2384x1303x33 mm 2382x1134x30 mm 2384x1303x33 mm vs 2382x1134x30 mm

Module area 3.106 m² 2.701 m² 0.405 m² apart

Weight 37.5 kg 32.4 kg -5.1 kg for JKM640N-66HL4M-BDV-Z4-EU

Weight per kWp 51.4 kg/kWp 50.6 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

Against the whole database

14,005 panels

Efficiency

#716 vs #580

JKM640N-66HL4M-BDV-Z4-EU leads by 136 places

Power density

#800 vs #521

JKM640N-66HL4M-BDV-Z4-EU leads by 279 places

Heat behaviour

#2,165 vs #2,165

Tied - the same position in the database

Weight

#4,748 vs #4,069

JKM640N-66HL4M-BDV-Z4-EU leads by 679 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#302 vs #1,530

JKM710-735N-66HL5-BDV-Z3-EU (730W bin) leads by 1,228 places

More useful comparisons

Open the full database

Same series, other bin

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)

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Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU

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Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM735N-66HL5-BDV-Z6-EU

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Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM730N-66HL5-BDV-Z3-EU

The same specification on paper

Same series, other bin

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM730N-66HL5-BDV-Z6-EU

The same specification on paper

Same series, other bin

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (725W bin)

The same specification on paper

Written summary

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Questions about this pairing

Which panel is better: Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) or Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

According to our database: Jinko Solar JKM640N-66HL4M-BDV-Z4-EU has higher module efficiency (23.69% vs 23.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730 W bin) has a module efficiency of 23.50%, while Jinko Solar JKM640N-66HL4M-BDV-Z4-EU is 23.69%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730W bin) use vs Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730 W bin) uses TOPCon cells; Jinko Solar JKM640N-66HL4M-BDV-Z4-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 JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730 W bin) has a 30 years power warranty; Jinko Solar JKM640N-66HL4M-BDV-Z4-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 JKM710-735N-66HL5-BDV-Z3-EU (730W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU bifacial panels?

Both Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (730 W bin) and Jinko Solar JKM640N-66HL4M-BDV-Z4-EU 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 173 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.