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

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

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

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

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

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

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

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

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

620 Wp 22.95 % TOPCon

Open panel page Datasheet PDF

DAH Solar

DHN-78X16/DG-640W

640 Wp 22.90 % TOPCon Bifacial Incomplete

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

Weight 28.2 kg 34.2 kg 6.0 kg lighter

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

Product warranty 12 yrs 15 yrs 3 yrs longer

Rated power 620 Wp 640 Wp 20 W more power

Open-circuit voltage 48.95 V 56.40 V 7.45 V apart

Module area 2.701 m² 2.795 m² 0.094 m² apart

Short-circuit current 16.15 A 14.32 A 1.83 A apart

Voltage at max power 40.90 V 47.60 V 6.70 V apart

Cell count 132 156 24 cells apart

Current at max power 15.16 A 13.45 A 1.71 A apart

Bifacial No Yes No vs Yes

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

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

20,802 kWh

DHN-78X16/DG-640W

21,473 kWh

Lifetime gap

671 kWh

Output when it is hot

Rated power carried across the range a module actually sees

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

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

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

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

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

Full specification

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

Power and efficiency

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

Module efficiency 22.95 % 22.90 % Effectively the same

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

Open-circuit voltage 48.95 V 56.40 V 7.45 V apart

Voltage at max power 40.90 V 47.60 V 6.70 V apart

Short-circuit current 16.15 A 14.32 A 1.83 A apart

Current at max power 15.16 A 13.45 A 1.71 A apart

Temperature

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

Mechanical

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

Module area 2.701 m² 2.795 m² 0.094 m² apart

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

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

Warranty and degradation

Product warranty 12 yrs 15 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 132 156 24 cells apart

Bifacial No Yes No vs Yes

Against the whole database

14,005 panels

Efficiency

#2,268 vs #2,359

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

Power density

#2,191 vs #2,389

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

#749 vs #7,363

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

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#2,491 vs #1,704

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

More useful comparisons

Open the full database

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

Same series, other bin

Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) vs Jinko Solar JKM610-635N-66HL4M-(V) (625W bin)

The same specification on paper

Same series, other bin

Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) vs Jinko Solar JKM610-635N-66HL4M-(V) (615W bin)

The same specification on paper

Same series, other bin

Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) vs Jinko Solar JKM610-635N-66HL4M-(V) (610W bin)

3 differences, the largest is module efficiency

Same series, other bin

DAH Solar

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

The same specification on paper

Written summary

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Questions about this pairing

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

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

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

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

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

Jinko Solar JKM610-635N-66HL4M-(V) (620 W bin) has a 30 years power warranty; DAH Solar DHN-78X16/DG-640 W 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 JKM610-635N-66HL4M-(V) (620W bin) and DAH Solar DHN-78X16/DG-640W 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 Jinko Solar and DAH Solar as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 176 Jinko Solar offers · See 11 DAH 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.