(655W class) vs (665W class) 15 of 18 identical Swap Change panels

Jinko Solar JKM650-670N-66QL6-BDV (655W class) vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)

Q: Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV (655W 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 24.25%). 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655W class) has a module efficiency of 24.25%, 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 (655W class) use vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655W 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655W 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV (655W 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 (655W class)

655 Wp 24.25 % 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

(665W class) leads on the differences that matter

The largest is module efficiency: 0.37 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences

How alike are they

15 of 18 comparable
parameters are identical

identical differs not published

What actually differs

3 of 18 parameters

Parameter (655W class) (665W class) Difference

Module efficiency 24.25 % 24.62 % 0.37 pp more efficient

Power density 242.5 Wp/m² 246.2 Wp/m² 3.7 Wp/m² higher

Rated power 655 Wp 665 Wp 10 W more power

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.

(655W class)

22,148 kWh

(665W class)

22,486 kWh

Lifetime gap

338 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario (655W class) (665W class)

Standard test conditions 25 °C 100.0% of rated power 655 W 665 W

Cool, bright day 40 °C 96.1% of rated power 629 W 639 W

Typical summer roof 55 °C 92.2% of rated power 604 W 613 W

Hot roof 70 °C 88.3% of rated power 578 W 587 W

Full specification

Parameter (655W class) (665W class) Difference

Power and efficiency

Rated power 655 Wp 665 Wp +10 W for (665W class)

Module efficiency 24.25 % 24.62 % +0.37 pp for (665W class)

Power density 242.5 Wp/m² 246.2 Wp/m² +3.7 Wp/m² for (665W class)

Open-circuit voltage 50.44 V 50.80 V Effectively the same

Voltage at max power 42.70 V 42.96 V Effectively the same

Short-circuit current 16.04 A 16.16 A Effectively the same

Current at max power 15.34 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 49.6 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

#171 vs #42

(665W class) leads by 129 places

Power density

#172 vs #42

(665W class) leads by 130 places

Heat behaviour

#511 vs #511

Tied - the same position in the database

Weight

#3,162 vs #2,555

(665W class) leads by 607 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#984 vs #634

(665W class) leads by 350 places

More useful comparisons

Open the full database

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Written summary

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Questions about this pairing

Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV (655W 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 24.25%). 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655 W class) has a module efficiency of 24.25%, 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 (655W class) use vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class)?

Jinko Solar JKM650-670N-66QL6-BDV (655 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 (655W class) and Jinko Solar JKM650-670N-66QL6-BDV (665W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV (655 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 176 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.