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JKM645-670N-66QL6-BDV-L vs JKM475N-48QL6-DB-F4-EU 7 of 19 identical Swap Change panels

Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM475N-48QL6-DB-F4-EU

JKM645-670N-66QL6-BDV-L
670 Wp 24.80 % N-type Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM475N-48QL6-DB-F4-EU
JKM475N-48QL6-DB-F4-EU
475 Wp 23.77 % N-type
Open panel page Datasheet PDF
The verdict

JKM645-670N-66QL6-BDV-L leads on the differences that matter

The largest is module efficiency: 1.03 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter JKM645-670N-66QL6-BDV-L JKM475N-48QL6-DB-F4-EU Difference
Module efficiency 24.80 % 23.77 % 1.03 pp more efficient
Rated power 670 Wp 475 Wp 195 W more power
Power density 248.0 Wp/m² 237.7 Wp/m² 10.3 Wp/m² higher
Weight 32.5 kg 24.4 kg 8.1 kg lighter
Product warranty 12 yrs 25 yrs 13 yrs longer
Open-circuit voltage 50.60 V 36.44 V 14.16 V apart
Module area 2.701 m² 1.998 m² 0.703 m² apart
Weight per kWp 48.5 kg/kWp 51.4 kg/kWp 2.9 kg/kWp lighter
Voltage at max power 42.92 V 31.13 V 11.79 V apart
Cell count 264 192 72 cells apart
Bifacial Yes No Yes vs No
Dimensions 2382x1134x30 mm 1762x1134x30 mm 2382x1134x30 mm vs 1762x1134x30 mm
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.
JKM645-670N-66QL6-BDV-L
22,655 kWh
JKM475N-48QL6-DB-F4-EU
16,061 kWh
Lifetime gap
6,594 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM645-670N-66QL6-BDV-L JKM475N-48QL6-DB-F4-EU
Standard test conditions 25 °C 100.0% of rated power 670 W 475 W
Cool, bright day 40 °C 96.1% of rated power 644 W 456 W
Typical summer roof 55 °C 92.2% of rated power 618 W 438 W
Hot roof 70 °C 88.3% of rated power 592 W 419 W
03

Full specification

Parameter JKM645-670N-66QL6-BDV-L JKM475N-48QL6-DB-F4-EU Difference
Power and efficiency
Rated power 670 Wp 475 Wp +195 W for JKM645-670N-66QL6-BDV-L
Module efficiency 24.80 % 23.77 % +1.03 pp for JKM645-670N-66QL6-BDV-L
Power density 248.0 Wp/m² 237.7 Wp/m² +10.3 Wp/m² for JKM645-670N-66QL6-BDV-L
Open-circuit voltage 50.60 V 36.44 V 14.16 V apart
Voltage at max power 42.92 V 31.13 V 11.79 V apart
Short-circuit current 16.34 A 15.85 A Effectively the same
Current at max power 15.61 A 15.26 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 1762x1134x30 mm 2382x1134x30 mm vs 1762x1134x30 mm
Module area 2.701 m² 1.998 m² 0.703 m² apart
Weight 32.5 kg 24.4 kg -8.1 kg for JKM475N-48QL6-DB-F4-EU
Weight per kWp 48.5 kg/kWp 51.4 kg/kWp -2.9 kg/kWp for JKM645-670N-66QL6-BDV-L
Warranty and degradation
Product warranty 12 yrs 25 yrs +13 yrs for JKM475N-48QL6-DB-F4-EU
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 264 192 72 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#12 vs #499
JKM645-670N-66QL6-BDV-L leads by 487 places
Power density
#14 vs #467
JKM645-670N-66QL6-BDV-L leads by 453 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#2,321 vs #4,743
JKM645-670N-66QL6-BDV-L leads by 2,422 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#486 vs #3,930
JKM645-670N-66QL6-BDV-L leads by 3,444 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM650-670N-66QL6-BDV (670W class)
One difference: cell technology
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)
One difference: cell technology
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM665N-66QL6-BDV-AntiGlare-F1-EU
The same specification on paper
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM650-670N-66QL6-BDV (660W class)
4 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM660N-66QL6-BDV-AntiGlare-F1-EU
3 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM645-670N-66QL6-BDV-L vs Jinko Solar JKM650-670N-66QL6-BDV (655W class)
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM645-670N-66QL6-BDV-L or Jinko Solar JKM475N-48QL6-DB-F4-EU?
According to our database: Jinko Solar JKM645-670N-66QL6-BDV-L has higher module efficiency (24.80% vs 23.77%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM645-670N-66QL6-BDV-L and Jinko Solar JKM475N-48QL6-DB-F4-EU?
Jinko Solar JKM645-670N-66QL6-BDV-L has a module efficiency of 24.80%, while Jinko Solar JKM475N-48QL6-DB-F4-EU is 23.77%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM645-670N-66QL6-BDV-L use vs Jinko Solar JKM475N-48QL6-DB-F4-EU?
Jinko Solar JKM645-670N-66QL6-BDV-L uses N-type cells; Jinko Solar JKM475N-48QL6-DB-F4-EU 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 JKM645-670N-66QL6-BDV-L and Jinko Solar JKM475N-48QL6-DB-F4-EU?
Jinko Solar JKM645-670N-66QL6-BDV-L has a 30 years power warranty; Jinko Solar JKM475N-48QL6-DB-F4-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 JKM645-670N-66QL6-BDV-L and Jinko Solar JKM475N-48QL6-DB-F4-EU bifacial panels?
Jinko Solar JKM645-670N-66QL6-BDV-L is bifacial (captures light from both faces); Jinko Solar JKM475N-48QL6-DB-F4-EU is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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.