DHN-78X16/DG-640W vs JKM610-635N-66HL4M-(V) (620W bin) 6 of 18 identical Swap Change panels

DAH Solar DHN-78X16/DG-640W vs Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)

Q: Which panel is better: DAH Solar DHN-78X16/DG-640W or Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

According to our database: Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) has higher module efficiency (22.95% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640W has a module efficiency of 22.90%, while Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) is 22.95%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does DAH Solar DHN-78X16/DG-640W use vs Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640W uses TOPCon cells; Jinko Solar JKM610-635N-66HL4M-(V) (620W 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 DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640W has a 30 years power warranty; Jinko Solar JKM610-635N-66HL4M-(V) (620W 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 DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) bifacial panels?

DAH Solar DHN-78X16/DG-640W is bifacial (captures light from both faces); Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

DAH Solar

DHN-78X16/DG-640W

640 Wp 22.90 % TOPCon Bifacial Incomplete

Open panel page Datasheet PDF

JKM610-635N-66HL4M-(V) (620W bin)

620 Wp 22.95 % TOPCon

Open panel page Datasheet PDF

The verdict

12 differences, and they point both ways

The largest is weight: 6.0 kg lighter. 6 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 12 differences

How alike are they

6 of 18 comparable
parameters are identical

identical differs not published

What actually differs

12 of 18 parameters

Parameter DHN-78X16/DG-640W JKM610-635N-66HL4M-(V) (620W bin) Difference

Weight 34.2 kg 28.2 kg 6.0 kg lighter

Weight per kWp 53.4 kg/kWp 45.5 kg/kWp 8.0 kg/kWp lighter

Product warranty 15 yrs 12 yrs 3 yrs longer

Rated power 640 Wp 620 Wp 20 W more power

Open-circuit voltage 56.40 V 48.95 V 7.45 V apart

Module area 2.795 m² 2.701 m² 0.094 m² apart

Short-circuit current 14.32 A 16.15 A 1.83 A apart

Voltage at max power 47.60 V 40.90 V 6.70 V apart

Cell count 156 132 24 cells apart

Current at max power 13.45 A 15.16 A 1.71 A apart

Bifacial Yes No Yes vs No

Dimensions 2465x1134x34 mm 2382x1134x35 mm 2465x1134x34 mm vs 2382x1134x35 mm

What it means on a roof

Thirty years of production

A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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.

DHN-78X16/DG-640W

21,473 kWh

JKM610-635N-66HL4M-(V) (620W bin)

20,802 kWh

Lifetime gap

671 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario DHN-78X16/DG-640W JKM610-635N-66HL4M-(V) (620W bin)

Standard test conditions 25 °C 100.0% of rated power 640 W 620 W

Cool, bright day 40 °C 95.7% of rated power 612 W 593 W

Typical summer roof 55 °C 91.3% of rated power 584 W 566 W

Hot roof 70 °C 87.0% of rated power 556 W 539 W

Full specification

Parameter DHN-78X16/DG-640W JKM610-635N-66HL4M-(V) (620W bin) Difference

Power and efficiency

Rated power 640 Wp 620 Wp +20 W for DHN-78X16/DG-640W

Module efficiency 22.90 % 22.95 % Effectively the same

Power density 229.0 Wp/m² 229.5 Wp/m² Effectively the same

Open-circuit voltage 56.40 V 48.95 V 7.45 V apart

Voltage at max power 47.60 V 40.90 V 6.70 V apart

Short-circuit current 14.32 A 16.15 A 1.83 A apart

Current at max power 13.45 A 15.16 A 1.71 A apart

Temperature

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

Mechanical

Dimensions 2465x1134x34 mm 2382x1134x35 mm 2465x1134x34 mm vs 2382x1134x35 mm

Module area 2.795 m² 2.701 m² 0.094 m² apart

Weight 34.2 kg 28.2 kg -6.0 kg for JKM610-635N-66HL4M-(V) (620W bin)

Weight per kWp 53.4 kg/kWp 45.5 kg/kWp -8.0 kg/kWp for JKM610-635N-66HL4M-(V) (620W bin)

Warranty and degradation

Product warranty 15 yrs 12 yrs +3 yrs for DHN-78X16/DG-640W

Performance warranty 30 yrs 30 yrs Same

Annual degradation - 0.40 %/yr Not published by DAH Solar

Technology

Cell technology TOPCon TOPCon Same

Cell type Monocrystalline Monocrystalline Same

Cell count 156 132 24 cells apart

Bifacial Yes No Yes vs No

Against the whole database

14,005 panels

Efficiency

#2,359 vs #2,268

JKM610-635N-66HL4M-(V) (620W bin) leads by 91 places

Power density

#2,389 vs #2,191

JKM610-635N-66HL4M-(V) (620W bin) leads by 198 places

Heat behaviour

#2,165 vs #2,165

Tied - the same position in the database

Weight

#7,363 vs #749

JKM610-635N-66HL4M-(V) (620W bin) leads by 6,614 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#1,704 vs #2,491

DHN-78X16/DG-640W leads by 787 places

More useful comparisons

Open the full database

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DAH Solar DHN-78X16/DG-640W vs DAH Solar DHN-78X16/DG-635W

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DAH Solar DHN-78X16/DG-640W vs DAH Solar DHN-78X16/DG-620W

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Same series, other bin

Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) vs Jinko Solar JKM610-635N-66HL4M-(V) (635W bin)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) vs Jinko Solar JKM610-635N-66HL4M-(V) (630W bin)

3 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: DAH Solar DHN-78X16/DG-640W or Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

According to our database: Jinko Solar JKM610-635N-66HL4M-(V) (620 W bin) has higher module efficiency (22.95% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640 W has a module efficiency of 22.90%, while Jinko Solar JKM610-635N-66HL4M-(V) (620 W bin) is 22.95%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does DAH Solar DHN-78X16/DG-640W use vs Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640 W uses TOPCon cells; Jinko Solar JKM610-635N-66HL4M-(V) (620 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 DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin)?

DAH Solar DHN-78X16/DG-640 W has a 30 years power warranty; Jinko Solar JKM610-635N-66HL4M-(V) (620 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 DAH Solar DHN-78X16/DG-640W and Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) bifacial panels?

DAH Solar DHN-78X16/DG-640 W is bifacial (captures light from both faces); Jinko Solar JKM610-635N-66HL4M-(V) (620 W bin) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Compare DAH Solar and Jinko Solar as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 11 DAH Solar offers · See 175 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.