Longi Solar LR7-54HJD-495M vs Longi Solar LR7-54HJD-500M
VS
The verdict
500M leads on the differences that matter
The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.
See the one differenceHow alike are they
18
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
1 of 19 parameters
What actually differs
Parameter
495M
500M
Difference
Module efficiency
24.30 %
24.50 %
0.20 pp more efficient
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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
495M
16,737 kWh
500M
16,907 kWh
Lifetime gap
170 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
495M
500M
Standard test conditions
25 °C
100.0% of rated power
495 W
500 W
Cool, bright day
40 °C
96.4% of rated power
477 W
482 W
Typical summer roof
55 °C
92.8% of rated power
459 W
464 W
Hot roof
70 °C
89.2% of rated power
442 W
446 W
03
Full specification
Parameter
495M
500M
Difference
Power and efficiency
Rated power
495 Wp
500 Wp
Effectively the same
Module efficiency
24.30 %
24.50 %
+0.20 pp for 500M
Power density
242.5 Wp/m²
245.0 Wp/m²
Effectively the same
Open-circuit voltage
41.25 V
41.35 V
Effectively the same
Voltage at max power
34.07 V
34.17 V
Effectively the same
Short-circuit current
15.19 A
15.30 A
Effectively the same
Current at max power
14.53 A
14.63 A
Effectively the same
Temperature
Temperature coefficient
-0.240 %/°C
-0.240 %/°C
Same
Mechanical
Dimensions
1800x1134x30 mm
1800x1134x30 mm
Same
Module area
2.041 m²
2.041 m²
Same
Weight
23.5 kg
23.5 kg
Same
Weight per kWp
47.5 kg/kWp
47.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
30 yrs
30 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.35 %/yr
Same
Technology
Cell technology
Back Contact
Back Contact
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
108
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#131
vs
#74
500M leads by 57 places
Power density
#159
vs
#77
500M leads by 82 places
Heat behaviour
#13
vs
#13
Tied - the same position in the database
Weight
#1,708
vs
#1,450
500M leads by 258 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,810
vs
#1,611
500M leads by 199 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Longi Solar LR7-54HJD-495M or Longi Solar LR7-54HJD-500M?
According to our database: Longi Solar LR7-54HJD-500M has higher module efficiency (24.50% vs 24.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-54HJD-495M and Longi Solar LR7-54HJD-500M?
Longi Solar LR7-54HJD-495M has a module efficiency of 24.30%, while Longi Solar LR7-54HJD-500M is 24.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-54HJD-495M use vs Longi Solar LR7-54HJD-500M?
Longi Solar LR7-54HJD-495M uses Back Contact cells; Longi Solar LR7-54HJD-500M 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 Longi Solar LR7-54HJD-495M and Longi Solar LR7-54HJD-500M?
Longi Solar LR7-54HJD-495M has a 30 years power warranty; Longi Solar LR7-54HJD-500M 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 Longi Solar LR7-54HJD-495M and Longi Solar LR7-54HJD-500M bifacial panels?
Both Longi Solar LR7-54HJD-495M and Longi Solar LR7-54HJD-500M 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 177 Longi 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.