JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs JKM710-735N-66HL5-BDV-Z3-EU (720W bin) 5 of 19 identical Swap Change panels

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

Q: Which panel is better: Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) or Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

According to our database: Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) has higher module efficiency (23.18% vs 22.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) has a module efficiency of 22.18%, while Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) use vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) uses N-type cells; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) has a 30 years power warranty; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W 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.

Q: Are Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) bifacial panels?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) is bifacial (captures light from both faces); Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

JKM615-635N-78HL4-(V)-F6-EN (620W variant)

620 Wp 22.18 % N-type

Open panel page Datasheet PDF

JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

720 Wp 23.18 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

JKM710-735N-66HL5-BDV-Z3-EU (720W bin) leads on the differences that matter

The largest is module efficiency: 1.00 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

What actually differs

14 of 19 parameters

Parameter JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM710-735N-66HL5-BDV-Z3-EU (720W bin) Difference

Module efficiency 22.18 % 23.18 % 1.00 pp more efficient

Rated power 620 Wp 720 Wp 100 W more power

Power density 221.8 Wp/m² 231.8 Wp/m² 10.0 Wp/m² higher

Weight 29.5 kg 37.5 kg 8.0 kg lighter

Open-circuit voltage 56.40 V 49.04 V 7.36 V apart

Short-circuit current 13.86 A 18.67 A 4.81 A apart

Module area 2.795 m² 3.106 m² 0.311 m² apart

Weight per kWp 47.6 kg/kWp 52.1 kg/kWp 4.5 kg/kWp lighter

Cell technology N-type TOPCon N-type vs TOPCon

Voltage at max power 46.97 V 40.89 V 6.08 V apart

Current at max power 13.20 A 17.61 A 4.41 A apart

Cell count 156 132 24 cells apart

Bifacial No Yes No vs Yes

Dimensions 2465x1134x35 mm 2384x1303x33 mm 2465x1134x35 mm vs 2384x1303x33 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.

JKM615-635N-78HL4-(V)-F6-EN (620W variant)

20,802 kWh

JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

24,157 kWh

Lifetime gap

3,355 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

Standard test conditions 25 °C 100.0% of rated power 620 W 720 W

Cool, bright day 40 °C 95.7% of rated power 593 W 689 W

Typical summer roof 55 °C 91.3% of rated power 566 W 657 W

Hot roof 70 °C 87.0% of rated power 539 W 626 W

Full specification

Parameter JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM710-735N-66HL5-BDV-Z3-EU (720W bin) Difference

Power and efficiency

Rated power 620 Wp 720 Wp +100 W for JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

Module efficiency 22.18 % 23.18 % +1.00 pp for JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

Power density 221.8 Wp/m² 231.8 Wp/m² +10.0 Wp/m² for JKM710-735N-66HL5-BDV-Z3-EU (720W bin)

Open-circuit voltage 56.40 V 49.04 V 7.36 V apart

Voltage at max power 46.97 V 40.89 V 6.08 V apart

Short-circuit current 13.86 A 18.67 A 4.81 A apart

Current at max power 13.20 A 17.61 A 4.41 A apart

Temperature

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

Mechanical

Dimensions 2465x1134x35 mm 2384x1303x33 mm 2465x1134x35 mm vs 2384x1303x33 mm

Module area 2.795 m² 3.106 m² 0.311 m² apart

Weight 29.5 kg 37.5 kg -8.0 kg for JKM615-635N-78HL4-(V)-F6-EN (620W variant)

Weight per kWp 47.6 kg/kWp 52.1 kg/kWp -4.5 kg/kWp for JKM615-635N-78HL4-(V)-F6-EN (620W 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 N-type TOPCon N-type vs TOPCon

Cell type Monocrystalline Monocrystalline Same

Cell count 156 132 24 cells apart

Bifacial No Yes No vs Yes

Against the whole database

14,005 panels

Efficiency

#5,930 vs #1,424

JKM710-735N-66HL5-BDV-Z3-EU (720W bin) leads by 4,506 places

Power density

#5,869 vs #1,347

JKM710-735N-66HL5-BDV-Z3-EU (720W bin) leads by 4,522 places

Heat behaviour

#2,165 vs #2,165

Tied - the same position in the database

Weight

#1,761 vs #5,516

JKM615-635N-78HL4-(V)-F6-EN (620W variant) leads by 3,755 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#3,366 vs #535

JKM710-735N-66HL5-BDV-Z3-EU (720W bin) leads by 2,831 places

More useful comparisons

Open the full database

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (630W variant)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)

The same specification on paper

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (615W variant)

The same specification on paper

Same series, other bin

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (735W bin)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) vs Jinko Solar JKM735N-66HL5-BDV-Z3-EU

3 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) or Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

According to our database: Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720 W bin) has higher module efficiency (23.18% vs 22.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) has a module efficiency of 22.18%, while Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720 W bin) is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) use vs Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) uses N-type cells; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) has a 30 years power warranty; Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720W bin) bifacial panels?

Jinko Solar JKM710-735N-66HL5-BDV-Z3-EU (720 W bin) is bifacial (captures light from both faces); Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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.