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JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs JKM645N-66HL4M-BDV-Z4-EU 15 of 19 identical Swap Change panels

Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM645N-66HL4M-BDV-Z4-EU

JKM605-630N-66HL4M-BDV-F3-EN (625W column)
625 Wp 23.14 % N-type Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM645N-66HL4M-BDV-Z4-EU
JKM645N-66HL4M-BDV-Z4-EU
645 Wp 23.88 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JKM645N-66HL4M-BDV-Z4-EU leads on the differences that matter

The largest is module efficiency: 0.74 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences
How alike are they
15 of 19 comparable
parameters are identical
identical differs
01

What actually differs

4 of 19 parameters
Parameter JKM605-630N-66HL4M-BDV-F3-EN (625W column) JKM645N-66HL4M-BDV-Z4-EU 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
Cell technology N-type TOPCon N-type vs TOPCon
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.
JKM605-630N-66HL4M-BDV-F3-EN (625W column)
20,970 kWh
JKM645N-66HL4M-BDV-Z4-EU
21,641 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM605-630N-66HL4M-BDV-F3-EN (625W column) JKM645N-66HL4M-BDV-Z4-EU
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 JKM605-630N-66HL4M-BDV-F3-EN (625W column) JKM645N-66HL4M-BDV-Z4-EU Difference
Power and efficiency
Rated power 625 Wp 645 Wp +20 W for JKM645N-66HL4M-BDV-Z4-EU
Module efficiency 23.14 % 23.88 % +0.74 pp for JKM645N-66HL4M-BDV-Z4-EU
Power density 231.4 Wp/m² 238.8 Wp/m² +7.4 Wp/m² for JKM645N-66HL4M-BDV-Z4-EU
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 N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,509 vs #394
JKM645N-66HL4M-BDV-Z4-EU leads by 1,115 places
Power density
#1,513 vs #356
JKM645N-66HL4M-BDV-Z4-EU 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
JKM645N-66HL4M-BDV-Z4-EU leads by 1,539 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,239 vs #1,347
JKM645N-66HL4M-BDV-Z4-EU leads by 892 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (650W)
5 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM650N-66HL4M-BDV-Z4-EU
5 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (645W)
4 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (640W)
4 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM640N-66HL4M-BDV-Z4-EU
4 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) vs Jinko Solar JKM625-650N-66HL4M-BDV-Z1-EN (635W)
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) or Jinko Solar JKM645N-66HL4M-BDV-Z4-EU?
According to our database: Jinko Solar JKM645N-66HL4M-BDV-Z4-EU 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 JKM605-630N-66HL4M-BDV-F3-EN (625W column) and Jinko Solar JKM645N-66HL4M-BDV-Z4-EU?
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625 W column) has a module efficiency of 23.14%, while Jinko Solar JKM645N-66HL4M-BDV-Z4-EU is 23.88%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625W column) use vs Jinko Solar JKM645N-66HL4M-BDV-Z4-EU?
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625 W column) uses N-type cells; Jinko Solar JKM645N-66HL4M-BDV-Z4-EU 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 JKM605-630N-66HL4M-BDV-F3-EN (625W column) and Jinko Solar JKM645N-66HL4M-BDV-Z4-EU?
Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625 W column) has a 30 years power warranty; Jinko Solar JKM645N-66HL4M-BDV-Z4-EU 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 JKM605-630N-66HL4M-BDV-F3-EN (625W column) and Jinko Solar JKM645N-66HL4M-BDV-Z4-EU bifacial panels?
Both Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (625 W column) and Jinko Solar JKM645N-66HL4M-BDV-Z4-EU 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.

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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.