Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. 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
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JKM650N-78HL4-BDV-F9-EU
21,809 kWh
JKM645N-78HL4-BDV
21,641 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JKM650N-78HL4-BDV-F9-EU
JKM645N-78HL4-BDV
Standard test conditions
25 °C
100.0% of rated power
650 W
645 W
Cool, bright day
40 °C
95.7% of rated power
622 W
617 W
Typical summer roof
55 °C
91.3% of rated power
593 W
589 W
Hot roof
70 °C
87.0% of rated power
565 W
561 W
03
Full specification
Parameter
JKM650N-78HL4-BDV-F9-EU
JKM645N-78HL4-BDV
Difference
Power and efficiency
Rated power
650 Wp
645 Wp
Effectively the same
Module efficiency
23.25 %
23.07 %
Effectively the same
Power density
232.5 Wp/m²
230.7 Wp/m²
Effectively the same
Open-circuit voltage
57.60 V
57.47 V
Effectively the same
Voltage at max power
48.33 V
48.17 V
Effectively the same
Short-circuit current
14.10 A
14.04 A
Effectively the same
Current at max power
13.45 A
13.39 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2465x1134x30 mm
2465x1134x30 mm
Same
Module area
2.795 m²
2.795 m²
Same
Weight
34.0 kg
34.0 kg
Same
Weight per kWp
52.3 kg/kWp
52.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
156
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#1,239
vs
#1,683
JKM650N-78HL4-BDV-F9-EU leads by 444 places
Power density
#1,222
vs
#1,654
JKM650N-78HL4-BDV-F9-EU leads by 432 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#5,769
vs
#6,362
JKM650N-78HL4-BDV-F9-EU leads by 593 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,648
vs
#1,852
JKM650N-78HL4-BDV-F9-EU leads by 204 places
05
Open the full database
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Jinko Solar JKM650N-78HL4-BDV-F9-EU vs Jinko Solar JKM645N-78HL4-BDV-F9-EU
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The same specification on paper
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Jinko Solar JKM650N-78HL4-BDV-F9-EU or Jinko Solar JKM645N-78HL4-BDV?
According to our database: Jinko Solar JKM650N-78HL4-BDV-F9-EU has higher module efficiency (23.25% vs 23.07%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM650N-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV?
Jinko Solar JKM650N-78HL4-BDV-F9-EU has a module efficiency of 23.25%, while Jinko Solar JKM645N-78HL4-BDV is 23.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM650N-78HL4-BDV-F9-EU use vs Jinko Solar JKM645N-78HL4-BDV?
Jinko Solar JKM650N-78HL4-BDV-F9-EU uses TOPCon cells; Jinko Solar JKM645N-78HL4-BDV 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-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV?
Jinko Solar JKM650N-78HL4-BDV-F9-EU has a 30 years power warranty; Jinko Solar JKM645N-78HL4-BDV 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-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV bifacial panels?
Both Jinko Solar JKM650N-78HL4-BDV-F9-EU and Jinko Solar JKM645N-78HL4-BDV 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 170 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.