Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625W) vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)
VS
The verdict
(645W) 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
(625W)
(645W)
Difference
Module efficiency
23.14 %
23.88 %
0.74 pp more efficient
Power density
231.4 Wp/m²
238.8 Wp/m²
7.4 Wp/m² higher
Rated power
625 Wp
645 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
(625W)
20,970 kWh
(645W)
21,641 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
(625W)
(645W)
Standard test conditions
25 °C
100.0% of rated power
625 W
645 W
Cool, bright day
40 °C
95.7% of rated power
598 W
617 W
Typical summer roof
55 °C
91.3% of rated power
571 W
589 W
Hot roof
70 °C
87.0% of rated power
543 W
561 W
03
Full specification
Parameter
(625W)
(645W)
Difference
Power and efficiency
Rated power
625 Wp
645 Wp
+20 W for (645W)
Module efficiency
23.14 %
23.88 %
+0.74 pp for (645W)
Power density
231.4 Wp/m²
238.8 Wp/m²
+7.4 Wp/m² for (645W)
Open-circuit voltage
49.28 V
50.08 V
Effectively the same
Voltage at max power
40.88 V
41.44 V
Effectively the same
Short-circuit current
16.14 A
16.38 A
Effectively the same
Current at max power
15.29 A
15.57 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2382x1134x30 mm
2382x1134x30 mm
Same
Module area
2.701 m²
2.701 m²
Same
Weight
32.4 kg
32.4 kg
Same
Weight per kWp
51.8 kg/kWp
50.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#1,509
vs
#394
(645W) leads by 1,115 places
Power density
#1,513
vs
#356
(645W) leads by 1,157 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#5,218
vs
#3,679
(645W) leads by 1,539 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,239
vs
#1,347
(645W) leads by 892 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 JKM625-650N-66HL4M-BDV-Z1-EN (625W) or Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)?
According to our database: Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645 W) has higher module efficiency (23.88% vs 23.14%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625W) and Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)?
Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625 W) has a module efficiency of 23.14%, while Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645 W) is 23.88%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625W) use vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)?
Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625 W) uses TOPCon cells; Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645 W) 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 JKM625-650N-66HL4M-BDV-Z1-EN (625W) and Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)?
Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625 W) has a 30 years power warranty; Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645 W) 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 JKM625-650N-66HL4M-BDV-Z1-EN (625W) and Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W) bifacial panels?
Both Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (625 W) and Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645 W) 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 173 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.