Jinko Solar JKM650N-66QL6-BDX vs Jinko Solar JKM670N-66QL6-BDX
VS
The verdict
JKM670N-66QL6-BDX leads on the differences that matter
The largest is module efficiency: 0.74 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
JKM650N-66QL6-BDX
JKM670N-66QL6-BDX
Difference
Module efficiency
24.06 %
24.80 %
0.74 pp more efficient
Power density
240.6 Wp/m²
248.0 Wp/m²
7.4 Wp/m² higher
Rated power
650 Wp
670 Wp
20 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.
JKM650N-66QL6-BDX
21,978 kWh
JKM670N-66QL6-BDX
22,655 kWh
Lifetime gap
677 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JKM650N-66QL6-BDX
JKM670N-66QL6-BDX
Standard test conditions
25 °C
100.0% of rated power
650 W
670 W
Cool, bright day
40 °C
96.1% of rated power
625 W
644 W
Typical summer roof
55 °C
92.2% of rated power
599 W
618 W
Hot roof
70 °C
88.3% of rated power
574 W
592 W
03
Full specification
Parameter
JKM650N-66QL6-BDX
JKM670N-66QL6-BDX
Difference
Power and efficiency
Rated power
650 Wp
670 Wp
+20 W for JKM670N-66QL6-BDX
Module efficiency
24.06 %
24.80 %
+0.74 pp for JKM670N-66QL6-BDX
Power density
240.6 Wp/m²
248.0 Wp/m²
+7.4 Wp/m² for JKM670N-66QL6-BDX
Open-circuit voltage
50.26 V
50.60 V
Effectively the same
Voltage at max power
42.57 V
42.92 V
Effectively the same
Short-circuit current
15.98 A
16.34 A
Effectively the same
Current at max power
15.27 A
15.61 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
38.8 kg
38.8 kg
Same
Weight per kWp
59.7 kg/kWp
57.9 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
264
264
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#290
vs
#13
JKM670N-66QL6-BDX leads by 277 places
Power density
#255
vs
#15
JKM670N-66QL6-BDX leads by 240 places
Heat behaviour
#515
vs
#515
Tied - the same position in the database
Weight
#12,337
vs
#11,574
JKM670N-66QL6-BDX leads by 763 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,256
vs
#522
JKM670N-66QL6-BDX leads by 734 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Jinko Solar JKM650N-66QL6-BDX or Jinko Solar JKM670N-66QL6-BDX?
According to our database: Jinko Solar JKM670N-66QL6-BDX has higher module efficiency (24.80% vs 24.06%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM650N-66QL6-BDX and Jinko Solar JKM670N-66QL6-BDX?
Jinko Solar JKM650N-66QL6-BDX has a module efficiency of 24.06%, while Jinko Solar JKM670N-66QL6-BDX is 24.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM650N-66QL6-BDX use vs Jinko Solar JKM670N-66QL6-BDX?
Jinko Solar JKM650N-66QL6-BDX uses TOPCon cells; Jinko Solar JKM670N-66QL6-BDX 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 JKM650N-66QL6-BDX and Jinko Solar JKM670N-66QL6-BDX?
Jinko Solar JKM650N-66QL6-BDX has a 30 years power warranty; Jinko Solar JKM670N-66QL6-BDX 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 JKM650N-66QL6-BDX and Jinko Solar JKM670N-66QL6-BDX bifacial panels?
Both Jinko Solar JKM650N-66QL6-BDX and Jinko Solar JKM670N-66QL6-BDX 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 145 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.