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JKM620N-78HL4-BDV vs JKM605N-78HL4-BDV 15 of 18 identical Swap Change panels

Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM605N-78HL4-BDV

JKM620N-78HL4-BDV
620 Wp 22.18 % N-type Bifacial Incomplete
Open panel page Datasheet PDF
VS
JKM605N-78HL4-BDV
605 Wp 21.64 % N-type Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

JKM620N-78HL4-BDV leads on the differences that matter

The largest is module efficiency: 0.54 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences
How alike are they
15 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 18 parameters
Parameter JKM620N-78HL4-BDV JKM605N-78HL4-BDV Difference
Module efficiency 22.18 % 21.64 % 0.54 pp more efficient
Power density 221.8 Wp/m² 216.4 Wp/m² 5.4 Wp/m² higher
Rated power 620 Wp 605 Wp 15 W more power
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JKM620N-78HL4-BDV
20,802 kWh
JKM605N-78HL4-BDV
20,299 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM620N-78HL4-BDV JKM605N-78HL4-BDV
Standard test conditions 25 °C 100.0% of rated power 620 W 605 W
Cool, bright day 40 °C 95.5% of rated power 592 W 578 W
Typical summer roof 55 °C 91.0% of rated power 564 W 551 W
Hot roof 70 °C 86.5% of rated power 536 W 523 W
03

Full specification

Parameter JKM620N-78HL4-BDV JKM605N-78HL4-BDV Difference
Power and efficiency
Rated power 620 Wp 605 Wp +15 W for JKM620N-78HL4-BDV
Module efficiency 22.18 % 21.64 % +0.54 pp for JKM620N-78HL4-BDV
Power density 221.8 Wp/m² 216.4 Wp/m² +5.4 Wp/m² for JKM620N-78HL4-BDV
Open-circuit voltage 55.58 V 55.17 V Effectively the same
Voltage at max power 45.93 V 45.42 V Effectively the same
Short-circuit current 14.19 A 13.95 A Effectively the same
Current at max power 13.50 A 13.32 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2465x1134x30 mm 2465x1134x30 mm Same
Module area 2.795 m² 2.795 m² Same
Weight 34.6 kg 34.6 kg Same
Weight per kWp 55.8 kg/kWp 57.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 156 156 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,930 vs #7,636
JKM620N-78HL4-BDV leads by 1,706 places
Power density
#5,869 vs #7,601
JKM620N-78HL4-BDV leads by 1,732 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#10,192 vs #11,122
JKM620N-78HL4-BDV leads by 930 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,481 vs #4,627
JKM620N-78HL4-BDV leads by 1,146 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM615N-78HL4-BDV
The same specification on paper
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Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM610N-78HL4-BDV
3 differences, the largest is module efficiency
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Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM580N-72HL4-BDV
8 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM575N-72HL4-BDV
7 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM570N-72HL4-BDV
7 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM620N-78HL4-BDV vs Jinko Solar JKM565N-72HL4-BDV
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM620N-78HL4-BDV or Jinko Solar JKM605N-78HL4-BDV?
According to our database: Jinko Solar JKM620N-78HL4-BDV has higher module efficiency (22.18% vs 21.64%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM620N-78HL4-BDV and Jinko Solar JKM605N-78HL4-BDV?
Jinko Solar JKM620N-78HL4-BDV has a module efficiency of 22.18%, while Jinko Solar JKM605N-78HL4-BDV is 21.64%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM620N-78HL4-BDV use vs Jinko Solar JKM605N-78HL4-BDV?
Jinko Solar JKM620N-78HL4-BDV uses N-type cells; Jinko Solar JKM605N-78HL4-BDV uses N-type. 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 JKM620N-78HL4-BDV and Jinko Solar JKM605N-78HL4-BDV?
Jinko Solar JKM620N-78HL4-BDV has a 30 years power warranty; Jinko Solar JKM605N-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 JKM620N-78HL4-BDV and Jinko Solar JKM605N-78HL4-BDV bifacial panels?
Both Jinko Solar JKM620N-78HL4-BDV and Jinko Solar JKM605N-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 172 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.