JA Solar JAT54S40-465/LR vs JA Solar JAT54S40-485/LR
VS
The verdict
485/LR leads on the differences that matter
The largest is module efficiency: 0.80 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
465/LR
485/LR
Difference
Module efficiency
23.50 %
24.30 %
0.80 pp more efficient
Power density
232.7 Wp/m²
242.7 Wp/m²
10.0 Wp/m² higher
Rated power
465 Wp
485 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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
465/LR
15,238 kWh
485/LR
15,893 kWh
Lifetime gap
655 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
465/LR
485/LR
Standard test conditions
25 °C
100.0% of rated power
465 W
485 W
Cool, bright day
40 °C
96.1% of rated power
447 W
466 W
Typical summer roof
55 °C
92.2% of rated power
429 W
447 W
Hot roof
70 °C
88.3% of rated power
411 W
428 W
03
Full specification
Parameter
465/LR
485/LR
Difference
Power and efficiency
Rated power
465 Wp
485 Wp
+20 W for 485/LR
Module efficiency
23.50 %
24.30 %
+0.80 pp for 485/LR
Power density
232.7 Wp/m²
242.7 Wp/m²
+10.0 Wp/m² for 485/LR
Open-circuit voltage
40.88 V
41.17 V
Effectively the same
Voltage at max power
34.61 V
35.13 V
Effectively the same
Short-circuit current
14.78 A
15.02 A
Effectively the same
Current at max power
13.45 A
13.81 A
Effectively the same
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
1762x1134x30 mm
Same
Module area
1.998 m²
1.998 m²
Same
Weight
19.3 kg
19.3 kg
Same
Weight per kWp
41.5 kg/kWp
39.8 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
108
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#716
vs
#131
485/LR leads by 585 places
Power density
#1,115
vs
#140
485/LR leads by 975 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#180
vs
#158
485/LR leads by 22 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6,379
vs
#4,770
485/LR leads by 1,609 places
05
Open the full database
More useful comparisons
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JA Solar JAT54S40-465/LR vs JA Solar JAT54S40-480/LR
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JA Solar JAT54S40-465/LR vs JA Solar JAT54S41-480/LR
5 differences, the largest is module efficiency
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JA Solar JAT54S40-465/LR vs JA Solar JAT54S40-475/LR
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JA Solar JAT54S40-465/LR vs JA Solar JAT54S40-470/LR
The same specification on paper
Same series, other bin
JA Solar JAT54S40-465/LR vs JA Solar JAT54S41-470/LR
2 differences, the largest is annual degradation
06
Written summary
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07
Questions about this pairing
Which panel is better: JA Solar JAT54S40-465/LR or JA Solar JAT54S40-485/LR?
According to our database: JA Solar JAT54S40-485/LR has higher module efficiency (24.30% vs 23.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAT54S40-465/LR and JA Solar JAT54S40-485/LR?
JA Solar JAT54S40-465/LR has a module efficiency of 23.50%, while JA Solar JAT54S40-485/LR is 24.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAT54S40-465/LR use vs JA Solar JAT54S40-485/LR?
JA Solar JAT54S40-465/LR uses TOPCon cells; JA Solar JAT54S40-485/LR 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 JA Solar JAT54S40-465/LR and JA Solar JAT54S40-485/LR?
JA Solar JAT54S40-465/LR has a 30 years power warranty; JA Solar JAT54S40-485/LR 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.
Shop prices: See 341 JA 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.