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54HJD-505M vs 54HVH-480M 10 of 19 identical Swap Change panels

Longi Solar LR7-54HJD-505M vs Longi Solar LR7-54HVH-480M

Longi Solar LR7-54HJD-505M
LR7-54HJD-505M
505 Wp 24.70 % Back Contact Bifacial
Open panel page Datasheet PDF
VS
Longi Solar LR7-54HVH-480M
LR7-54HVH-480M
480 Wp 23.50 % N-type
Open panel page Datasheet PDF
The verdict

54HJD-505M leads on the differences that matter

The largest is module efficiency: 1.20 pp more efficient. 10 of 19 comparable parameters are identical.

See all 9 differences
How alike are they
10 of 19 comparable
parameters are identical
identical differs
01

What actually differs

9 of 19 parameters
Parameter 54HJD-505M 54HVH-480M Difference
Module efficiency 24.70 % 23.50 % 1.20 pp more efficient
Power density 247.4 Wp/m² 235.2 Wp/m² 12.2 Wp/m² higher
Product warranty 30 yrs 15 yrs 15 yrs longer
Temperature coefficient -0.240 %/°C -0.260 %/°C 0.020 %/°C better in heat
Rated power 505 Wp 480 Wp 25 W more power
Weight 23.5 kg 21.6 kg 1.9 kg lighter
Cell technology Back Contact N-type Back Contact vs N-type
Bifacial Yes No Yes vs No
Open-circuit voltage 41.45 V 40.29 V 1.16 V apart
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
54HJD-505M
17,076 kWh
54HVH-480M
16,230 kWh
Lifetime gap
846 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 54HJD-505M 54HVH-480M
Standard test conditions 25 °C 100.0% of rated power 505 W 480 W
Cool, bright day 40 °C 96.1% of rated power 487 W 461 W
Typical summer roof 55 °C 92.2% of rated power 469 W 443 W
Hot roof 70 °C 88.3% of rated power 450 W 424 W
03

Full specification

Parameter 54HJD-505M 54HVH-480M Difference
Power and efficiency
Rated power 505 Wp 480 Wp +25 W for 54HJD-505M
Module efficiency 24.70 % 23.50 % +1.20 pp for 54HJD-505M
Power density 247.4 Wp/m² 235.2 Wp/m² +12.2 Wp/m² for 54HJD-505M
Open-circuit voltage 41.45 V 40.29 V 1.16 V apart
Voltage at max power 34.27 V 33.28 V Effectively the same
Short-circuit current 15.41 A 15.13 A Effectively the same
Current at max power 14.74 A 14.43 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.260 %/°C +0.020 %/°C for 54HJD-505M
Mechanical
Dimensions 1800x1134x30 mm 1800x1134x30 mm Same
Module area 2.041 m² 2.041 m² Same
Weight 23.5 kg 21.6 kg -1.9 kg for 54HVH-480M
Weight per kWp 46.5 kg/kWp 45.0 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 15 yrs +15 yrs for 54HJD-505M
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology Back Contact N-type Back Contact vs N-type
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#39 vs #716
54HJD-505M leads by 677 places
Power density
#39 vs #718
54HJD-505M leads by 679 places
Heat behaviour
#13 vs #511
54HJD-505M leads by 498 places
Weight
#1,199 vs #598
54HVH-480M leads by 601 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,425 vs #5,919
54HJD-505M leads by 4,494 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-54HJD-505M vs Longi Solar LR7-54HJD-510M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-54HJD-505M vs Longi Solar LR7-54HJD-500M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-54HJD-505M vs Longi Solar LR7-54HJD-495M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-54HVH-480M vs Longi Solar LR7-54HVH-500M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-54HVH-480M vs Longi Solar LR7-54HVH-495M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-54HVH-480M vs Longi Solar LR7-54HVH-490M
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-54HJD-505M or Longi Solar LR7-54HVH-480M?
According to our database: Longi Solar LR7-54HJD-505M has higher module efficiency (24.70% vs 23.50%); Longi Solar LR7-54HJD-505M tolerates heat better (temp coeff -0.240%/°C vs -0.260%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-54HJD-505M and Longi Solar LR7-54HVH-480M?
Longi Solar LR7-54HJD-505M has a module efficiency of 24.70%, while Longi Solar LR7-54HVH-480M is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-54HJD-505M use vs Longi Solar LR7-54HVH-480M?
Longi Solar LR7-54HJD-505M uses Back Contact cells; Longi Solar LR7-54HVH-480M 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 Longi Solar LR7-54HJD-505M and Longi Solar LR7-54HVH-480M?
Longi Solar LR7-54HJD-505M has a 30 years power warranty; Longi Solar LR7-54HVH-480M 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-505M and Longi Solar LR7-54HVH-480M bifacial panels?
Longi Solar LR7-54HJD-505M is bifacial (captures light from both faces); Longi Solar LR7-54HVH-480M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 181 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.