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JAM66D45-620/LB vs AIKO-A480-MAH54Mw 2 of 19 identical Swap Change panels

JA Solar JAM66D45-620/LB vs AIKO AIKO-A480-MAH54Mw

JA Solar JAM66D45-620/LB
JAM66D45-620/LB
620 Wp 23.00 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
AIKO AIKO-A480-MAH54Mw
AIKO-A480-MAH54Mw
480 Wp 24.10 % Back Contact
Open panel page Datasheet PDF
The verdict

AIKO-A480-MAH54Mw leads on the differences that matter

The largest is module efficiency: 1.10 pp more efficient. 2 of 19 comparable parameters are identical.

See all 17 differences
How alike are they
2 of 19 comparable
parameters are identical
identical differs
01

What actually differs

17 of 19 parameters
Parameter JAM66D45-620/LB AIKO-A480-MAH54Mw Difference
Module efficiency 23.00 % 24.10 % 1.10 pp more efficient
Rated power 620 Wp 480 Wp 140 W more power
Power density 229.5 Wp/m² 240.9 Wp/m² 11.4 Wp/m² higher
Temperature coefficient -0.290 %/°C -0.260 %/°C 0.030 %/°C better in heat
Weight 33.1 kg 21.5 kg 11.6 kg lighter
Weight per kWp 53.4 kg/kWp 44.8 kg/kWp 8.6 kg/kWp lighter
Product warranty 12 yrs 25 yrs 13 yrs longer
Open-circuit voltage 48.50 V 41.30 V 7.20 V apart
Module area 2.701 m² 1.992 m² 0.709 m² apart
Short-circuit current 16.13 A 14.38 A 1.75 A apart
Cell technology TOPCon Back Contact TOPCon vs Back Contact
Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower
Voltage at max power 40.21 V 34.86 V 5.35 V apart
Cell count 132 108 24 cells apart
Current at max power 15.42 A 13.78 A 1.64 A apart
Bifacial Yes No Yes vs No
Dimensions 2382x1134x30 mm 1757x1134x30 mm 2382x1134x30 mm vs 1757x1134x30 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
JAM66D45-620/LB
20,802 kWh
AIKO-A480-MAH54Mw
16,230 kWh
Lifetime gap
4,572 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JAM66D45-620/LB AIKO-A480-MAH54Mw
Standard test conditions 25 °C 100.0% of rated power 620 W 480 W
Cool, bright day 40 °C 95.7% of rated power 593 W 461 W
Typical summer roof 55 °C 91.3% of rated power 566 W 443 W
Hot roof 70 °C 87.0% of rated power 539 W 424 W
03

Full specification

Parameter JAM66D45-620/LB AIKO-A480-MAH54Mw Difference
Power and efficiency
Rated power 620 Wp 480 Wp +140 W for JAM66D45-620/LB
Module efficiency 23.00 % 24.10 % +1.10 pp for AIKO-A480-MAH54Mw
Power density 229.5 Wp/m² 240.9 Wp/m² +11.4 Wp/m² for AIKO-A480-MAH54Mw
Open-circuit voltage 48.50 V 41.30 V 7.20 V apart
Voltage at max power 40.21 V 34.86 V 5.35 V apart
Short-circuit current 16.13 A 14.38 A 1.75 A apart
Current at max power 15.42 A 13.78 A 1.64 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.260 %/°C +0.030 %/°C for AIKO-A480-MAH54Mw
Mechanical
Dimensions 2382x1134x30 mm 1757x1134x30 mm 2382x1134x30 mm vs 1757x1134x30 mm
Module area 2.701 m² 1.992 m² 0.709 m² apart
Weight 33.1 kg 21.5 kg -11.6 kg for AIKO-A480-MAH54Mw
Weight per kWp 53.4 kg/kWp 44.8 kg/kWp -8.6 kg/kWp for AIKO-A480-MAH54Mw
Warranty and degradation
Product warranty 12 yrs 25 yrs +13 yrs for AIKO-A480-MAH54Mw
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for AIKO-A480-MAH54Mw
Technology
Cell technology TOPCon Back Contact TOPCon vs Back Contact
Cell type Monocrystalline Monocrystalline Same
Cell count 132 108 24 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#1,919 vs #219
AIKO-A480-MAH54Mw leads by 1,700 places
Power density
#2,191 vs #230
AIKO-A480-MAH54Mw leads by 1,961 places
Heat behaviour
#2,165 vs #511
AIKO-A480-MAH54Mw leads by 1,654 places
Weight
#7,289 vs #535
AIKO-A480-MAH54Mw leads by 6,754 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,537 vs #3,227
JAM66D45-620/LB leads by 690 places
05

More useful comparisons

Open the full database
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JA Solar JAM66D45-620/LB vs JA Solar JAM66D45-630/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-620/LB vs JA Solar JAM66D45-625/LB
The same specification on paper
Same series, other bin
JA Solar JAM66D45-620/LB vs JA Solar JAM66D45-615/LB
One difference: module efficiency
Same series, other bin
JA Solar JAM66D45-620/LB vs JA Solar JAM66D45-610/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-620/LB vs JA Solar JAM66D45-605/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-620/LB vs JA Solar JAM72D30-580/LB/1500V
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: JA Solar JAM66D45-620/LB or AIKO AIKO-A480-MAH54Mw?
According to our database: AIKO AIKO-A480-MAH54Mw has higher module efficiency (24.10% vs 23.00%); AIKO AIKO-A480-MAH54Mw tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAM66D45-620/LB and AIKO AIKO-A480-MAH54Mw?
JA Solar JAM66D45-620/LB has a module efficiency of 23.00%, while AIKO AIKO-A480-MAH54Mw is 24.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM66D45-620/LB use vs AIKO AIKO-A480-MAH54Mw?
JA Solar JAM66D45-620/LB uses TOPCon cells; AIKO AIKO-A480-MAH54Mw uses Back Contact. 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 JA Solar JAM66D45-620/LB and AIKO AIKO-A480-MAH54Mw?
JA Solar JAM66D45-620/LB has a 30 years power warranty; AIKO AIKO-A480-MAH54Mw 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 JA Solar JAM66D45-620/LB and AIKO AIKO-A480-MAH54Mw bifacial panels?
JA Solar JAM66D45-620/LB is bifacial (captures light from both faces); AIKO AIKO-A480-MAH54Mw is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Compare JA Solar and AIKO as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 391 JA Solar offers · See 171 AIKO 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.