Longi Solar LR7-54HVB-490M vs Longi Solar LR7-72HVHF-670M
VS
The verdict
72HVHF-670M leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 9 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 9 differencesHow alike are they
9
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
9 of 18 parameters
What actually differs
Parameter
54HVB-490M
72HVHF-670M
Difference
Module efficiency
24.00 %
24.80 %
0.80 pp more efficient
Rated power
490 Wp
670 Wp
180 W more power
Weight
21.6 kg
28.5 kg
6.9 kg lighter
Power density
240.1 Wp/m²
248.0 Wp/m²
8.0 Wp/m² higher
Open-circuit voltage
40.52 V
54.30 V
13.78 V apart
Module area
2.041 m²
2.701 m²
0.660 m² apart
Voltage at max power
33.51 V
44.96 V
11.45 V apart
Cell count
108
144
36 cells apart
Dimensions
1800x1134x30 mm
2382x1134x30 mm
1800x1134x30 mm vs 2382x1134x30 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.
54HVB-490M
16,568 kWh
72HVHF-670M
22,655 kWh
Lifetime gap
6,087 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
54HVB-490M
72HVHF-670M
Standard test conditions
25 °C
100.0% of rated power
490 W
670 W
Cool, bright day
40 °C
96.1% of rated power
471 W
644 W
Typical summer roof
55 °C
92.2% of rated power
452 W
618 W
Hot roof
70 °C
88.3% of rated power
433 W
592 W
03
Full specification
Parameter
54HVB-490M
72HVHF-670M
Difference
Power and efficiency
Rated power
490 Wp
670 Wp
+180 W for 72HVHF-670M
Module efficiency
24.00 %
24.80 %
+0.80 pp for 72HVHF-670M
Power density
240.1 Wp/m²
248.0 Wp/m²
+8.0 Wp/m² for 72HVHF-670M
Open-circuit voltage
40.52 V
54.30 V
13.78 V apart
Voltage at max power
33.51 V
44.96 V
11.45 V apart
Short-circuit current
15.33 A
15.60 A
Effectively the same
Current at max power
14.63 A
14.91 A
Effectively the same
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
1800x1134x30 mm
2382x1134x30 mm
1800x1134x30 mm vs 2382x1134x30 mm
Module area
2.041 m²
2.701 m²
0.660 m² apart
Weight
21.6 kg
28.5 kg
-6.9 kg for 54HVB-490M
Weight per kWp
44.1 kg/kWp
42.5 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
-
15 yrs
Not published by Longi Solar
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
108
144
36 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#303
vs
#12
72HVHF-670M leads by 291 places
Power density
#313
vs
#14
72HVHF-670M leads by 299 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#377
vs
#226
72HVHF-670M leads by 151 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#8,306
vs
#284
72HVHF-670M leads by 8,022 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 LR7-54HVB-490M or Longi Solar LR7-72HVHF-670M?
According to our database: Longi Solar LR7-72HVHF-670M has higher module efficiency (24.80% vs 24.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-54HVB-490M and Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HVB-490M has a module efficiency of 24.00%, while Longi Solar LR7-72HVHF-670M is 24.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-54HVB-490M use vs Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HVB-490M uses N-type cells; Longi Solar LR7-72HVHF-670M 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 LR7-54HVB-490M and Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HVB-490M has a 30 years power warranty; Longi Solar LR7-72HVHF-670M 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 147 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.