(660W class) vs (665W class) 18 of 18 identical Swap Change panels

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)

Q: Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV (660W class) or Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

According to our database: Jinko Solar JKM650-670N-66QL6-BDV (665W class) has higher module efficiency (24.62% vs 24.43%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Jinko Solar JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660W class) has a module efficiency of 24.43%, while Jinko Solar JKM650-670N-66QL6-BDV (665W class) is 24.62%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Jinko Solar JKM650-670N-66QL6-BDV (660W class) use vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660W class) uses TOPCon cells; Jinko Solar JKM650-670N-66QL6-BDV (665W class) 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 JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660W class) has a 30 years power warranty; Jinko Solar JKM650-670N-66QL6-BDV (665W class) 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 JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class) 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.

JKM650-670N-66QL6-BDV (660W class)

660 Wp 24.43 % TOPCon Bifacial

Open panel page Datasheet PDF

JKM650-670N-66QL6-BDV (665W class)

665 Wp 24.62 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

Identical on every published parameter

All 18 comparable parameters agree, with 1 more left out because at least one datasheet does not publish it. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.

How alike are they

18 of 18 comparable
parameters are identical

identical differs not published

What actually differs

0 of 18 parameters

Every comparable parameter agrees. The full specification is below.

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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

(660W class)

22,317 kWh

(665W class)

22,486 kWh

Lifetime gap

169 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario (660W class) (665W class)

Standard test conditions 25 °C 100.0% of rated power 660 W 665 W

Cool, bright day 40 °C 96.1% of rated power 634 W 639 W

Typical summer roof 55 °C 92.2% of rated power 609 W 613 W

Hot roof 70 °C 88.3% of rated power 583 W 587 W

Full specification

Parameter (660W class) (665W class) Difference

Power and efficiency

Rated power 660 Wp 665 Wp Effectively the same

Module efficiency 24.43 % 24.62 % Effectively the same

Power density 244.3 Wp/m² 246.2 Wp/m² Effectively the same

Open-circuit voltage 50.62 V 50.80 V Effectively the same

Voltage at max power 42.83 V 42.96 V Effectively the same

Short-circuit current 16.10 A 16.16 A Effectively the same

Current at max power 15.41 A 15.48 A Effectively the same

Temperature

Temperature coefficient -0.260 %/°C -0.260 %/°C Same

Mechanical

Dimensions 2382x1134x30 mm 2382x1134x30 mm Same

Module area 2.701 m² 2.701 m² Same

Weight 32.5 kg 32.5 kg Same

Weight per kWp 49.2 kg/kWp 48.9 kg/kWp Effectively the same

Warranty and degradation

Product warranty 12 yrs 12 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.35 %/yr 0.35 %/yr Same

Technology

Cell technology TOPCon TOPCon Same

Cell type Monocrystalline Monocrystalline Same

Cell count - - Neither datasheet publishes this

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#87 vs #42

(665W class) leads by 45 places

Power density

#88 vs #42

(665W class) leads by 46 places

Heat behaviour

#511 vs #511

Tied - the same position in the database

Weight

#2,811 vs #2,555

(665W class) leads by 256 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#801 vs #634

(665W class) leads by 167 places

More useful comparisons

Open the full database

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM650-670N-66QL6-BDV (670W class)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM645-670N-66QL6-BDV-L

4 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM670N-66QL6-BDV-F4-EU

4 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W)

The same specification on paper

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV (660W class) vs Jinko Solar JKM665N-66QL6-BDV-AntiGlare-F1-EU

One difference: cell technology

Written summary

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Questions about this pairing

Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV (660W class) or Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

According to our database: Jinko Solar JKM650-670N-66QL6-BDV (665 W class) has higher module efficiency (24.62% vs 24.43%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Jinko Solar JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660 W class) has a module efficiency of 24.43%, while Jinko Solar JKM650-670N-66QL6-BDV (665 W class) is 24.62%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Jinko Solar JKM650-670N-66QL6-BDV (660W class) use vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660 W class) uses TOPCon cells; Jinko Solar JKM650-670N-66QL6-BDV (665 W class) 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 JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (660 W class) has a 30 years power warranty; Jinko Solar JKM650-670N-66QL6-BDV (665 W class) 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 JKM650-670N-66QL6-BDV (660W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV (660 W class) and Jinko Solar JKM650-670N-66QL6-BDV (665 W class) 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 172 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.