BDV-F2-EU (665W) vs BDV (655W class) 15 of 18 identical Swap Change panels

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) vs Jinko Solar JKM650-670N-66QL6-BDV (655W class)

Q: Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) or Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

According to our database: Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) has a module efficiency of 24.62%, while Jinko Solar JKM650-670N-66QL6-BDV (655W class) is 24.25%. 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-F2-EU (665W) use vs Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) uses TOPCon cells; Jinko Solar JKM650-670N-66QL6-BDV (655W 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) has a 30 years power warranty; Jinko Solar JKM650-670N-66QL6-BDV (655W 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W 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-F2-EU (665W)

665 Wp 24.62 % TOPCon Bifacial

Open panel page Datasheet PDF

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

655 Wp 24.25 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

BDV-F2-EU (665W) 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 BDV-F2-EU (665W) BDV (655W class) Difference

Module efficiency 24.62 % 24.25 % 0.37 pp more efficient

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

Rated power 665 Wp 655 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.

BDV-F2-EU (665W)

22,486 kWh

BDV (655W class)

22,148 kWh

Lifetime gap

338 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario BDV-F2-EU (665W) BDV (655W class)

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

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

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

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

Full specification

Parameter BDV-F2-EU (665W) BDV (655W class) Difference

Power and efficiency

Rated power 665 Wp 655 Wp +10 W for BDV-F2-EU (665W)

Module efficiency 24.62 % 24.25 % +0.37 pp for BDV-F2-EU (665W)

Power density 246.2 Wp/m² 242.5 Wp/m² +3.7 Wp/m² for BDV-F2-EU (665W)

Open-circuit voltage 50.80 V 50.44 V Effectively the same

Voltage at max power 42.96 V 42.70 V Effectively the same

Short-circuit current 16.16 A 16.04 A Effectively the same

Current at max power 15.48 A 15.34 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 48.9 kg/kWp 49.6 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

#42 vs #171

BDV-F2-EU (665W) leads by 129 places

Power density

#42 vs #172

BDV-F2-EU (665W) leads by 130 places

Heat behaviour

#511 vs #511

Tied - the same position in the database

Weight

#2,555 vs #3,162

BDV-F2-EU (665W) leads by 607 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#634 vs #984

BDV-F2-EU (665W) leads by 350 places

More useful comparisons

Open the full database

Same series, other bin

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

The same specification on paper

Same series, other bin

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

The same specification on paper

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Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) vs Jinko Solar JKM645-670N-66QL6-BDV-L

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Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) vs Jinko Solar JKM670N-66QL6-BDV-F4-EU

One difference: cell technology

Same series, other bin

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

The same specification on paper

Same series, other bin

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W) 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-F2-EU (665W) or Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

According to our database: Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665 W) 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665 W) has a module efficiency of 24.62%, while Jinko Solar JKM650-670N-66QL6-BDV (655 W class) is 24.25%. 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-F2-EU (665W) use vs Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665 W) uses TOPCon cells; Jinko Solar JKM650-670N-66QL6-BDV (655 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class)?

Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665 W) has a 30 years power warranty; Jinko Solar JKM650-670N-66QL6-BDV (655 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-F2-EU (665W) and Jinko Solar JKM650-670N-66QL6-BDV (655W class) bifacial panels?

Both Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665 W) and Jinko Solar JKM650-670N-66QL6-BDV (655 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.