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JKM670N-66QL6-BDV-F4-EU vs JKM650-670N-66QL6-BDV (660W class) 14 of 18 identical Swap Change panels

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

Jinko Solar JKM670N-66QL6-BDV-F4-EU
JKM670N-66QL6-BDV-F4-EU
670 Wp 24.80 % N-type Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM650-670N-66QL6-BDV (660W class)
JKM650-670N-66QL6-BDV (660W class)
660 Wp 24.43 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JKM670N-66QL6-BDV-F4-EU leads on the differences that matter

The largest is module efficiency: 0.37 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences
How alike are they
14 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 18 parameters
Parameter JKM670N-66QL6-BDV-F4-EU JKM650-670N-66QL6-BDV (660W class) Difference
Module efficiency 24.80 % 24.43 % 0.37 pp more efficient
Cell technology N-type TOPCon N-type vs TOPCon
Power density 248.0 Wp/m² 244.3 Wp/m² 3.7 Wp/m² higher
Rated power 670 Wp 660 Wp 10 W more power
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
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.
JKM670N-66QL6-BDV-F4-EU
22,655 kWh
JKM650-670N-66QL6-BDV (660W class)
22,317 kWh
Lifetime gap
338 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM670N-66QL6-BDV-F4-EU JKM650-670N-66QL6-BDV (660W class)
Standard test conditions 25 °C 100.0% of rated power 670 W 660 W
Cool, bright day 40 °C 96.1% of rated power 644 W 634 W
Typical summer roof 55 °C 92.2% of rated power 618 W 609 W
Hot roof 70 °C 88.3% of rated power 592 W 583 W
03

Full specification

Parameter JKM670N-66QL6-BDV-F4-EU JKM650-670N-66QL6-BDV (660W class) Difference
Power and efficiency
Rated power 670 Wp 660 Wp +10 W for JKM670N-66QL6-BDV-F4-EU
Module efficiency 24.80 % 24.43 % +0.37 pp for JKM670N-66QL6-BDV-F4-EU
Power density 248.0 Wp/m² 244.3 Wp/m² +3.7 Wp/m² for JKM670N-66QL6-BDV-F4-EU
Open-circuit voltage 50.60 V 50.62 V Effectively the same
Voltage at max power 42.92 V 42.83 V Effectively the same
Short-circuit current 16.34 A 16.10 A Effectively the same
Current at max power 15.61 A 15.41 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 48.5 kg/kWp 49.2 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 N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 264 - Not published by Jinko Solar
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#12 vs #87
JKM670N-66QL6-BDV-F4-EU leads by 75 places
Power density
#14 vs #88
JKM670N-66QL6-BDV-F4-EU leads by 74 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#2,321 vs #2,811
JKM670N-66QL6-BDV-F4-EU leads by 490 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#486 vs #801
JKM670N-66QL6-BDV-F4-EU leads by 315 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM650-670N-66QL6-BDV (670W class)
One difference: cell technology
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W)
One difference: cell technology
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM645-670N-66QL6-BDV-L
The same specification on paper
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM670N-66QL6-BDX
3 differences, the largest is weight
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)
One difference: cell technology
Same series, other bin
Jinko Solar JKM670N-66QL6-BDV-F4-EU vs Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W)
One difference: cell technology
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM670N-66QL6-BDV-F4-EU or Jinko Solar JKM650-670N-66QL6-BDV (660W class)?
According to our database: Jinko Solar JKM670N-66QL6-BDV-F4-EU has higher module efficiency (24.80% 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 JKM670N-66QL6-BDV-F4-EU and Jinko Solar JKM650-670N-66QL6-BDV (660W class)?
Jinko Solar JKM670N-66QL6-BDV-F4-EU has a module efficiency of 24.80%, while Jinko Solar JKM650-670N-66QL6-BDV (660 W class) is 24.43%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM670N-66QL6-BDV-F4-EU use vs Jinko Solar JKM650-670N-66QL6-BDV (660W class)?
Jinko Solar JKM670N-66QL6-BDV-F4-EU uses N-type cells; Jinko Solar JKM650-670N-66QL6-BDV (660 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 JKM670N-66QL6-BDV-F4-EU and Jinko Solar JKM650-670N-66QL6-BDV (660W class)?
Jinko Solar JKM670N-66QL6-BDV-F4-EU has a 30 years power warranty; Jinko Solar JKM650-670N-66QL6-BDV (660 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 JKM670N-66QL6-BDV-F4-EU and Jinko Solar JKM650-670N-66QL6-BDV (660W class) bifacial panels?
Both Jinko Solar JKM670N-66QL6-BDV-F4-EU and Jinko Solar JKM650-670N-66QL6-BDV (660 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 174 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.