Skip to main content
72HVH-650M vs 72HVDF-665M 13 of 19 identical Swap Change panels

Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVDF-665M

Longi Solar LR7-72HVH-650M
LR7-72HVH-650M
650 Wp 24.10 % N-type
Open panel page Datasheet PDF
VS
Longi Solar LR7-72HVDF-665M
LR7-72HVDF-665M
665 Wp 24.60 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

6 differences, and they point both ways

The largest is module efficiency: 0.50 pp more efficient. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter 72HVH-650M 72HVDF-665M Difference
Module efficiency 24.10 % 24.60 % 0.50 pp more efficient
Weight 28.5 kg 33.5 kg 5.0 kg lighter
Weight per kWp 43.8 kg/kWp 50.4 kg/kWp 6.5 kg/kWp lighter
Power density 240.6 Wp/m² 246.2 Wp/m² 5.6 Wp/m² higher
Rated power 650 Wp 665 Wp 15 W more power
Bifacial No Yes No vs Yes
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.
72HVH-650M
21,978 kWh
72HVDF-665M
22,486 kWh
Lifetime gap
508 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 72HVH-650M 72HVDF-665M
Standard test conditions 25 °C 100.0% of rated power 650 W 665 W
Cool, bright day 40 °C 96.1% of rated power 625 W 639 W
Typical summer roof 55 °C 92.2% of rated power 599 W 613 W
Hot roof 70 °C 88.3% of rated power 574 W 587 W
03

Full specification

Parameter 72HVH-650M 72HVDF-665M Difference
Power and efficiency
Rated power 650 Wp 665 Wp +15 W for 72HVDF-665M
Module efficiency 24.10 % 24.60 % +0.50 pp for 72HVDF-665M
Power density 240.6 Wp/m² 246.2 Wp/m² +5.6 Wp/m² for 72HVDF-665M
Open-circuit voltage 53.90 V 54.52 V Effectively the same
Voltage at max power 44.56 V 45.17 V Effectively the same
Short-circuit current 15.29 A 15.35 A Effectively the same
Current at max power 14.59 A 14.72 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 2382x1134x30 mm Same
Module area 2.701 m² 2.701 m² Same
Weight 28.5 kg 33.5 kg -5.0 kg for 72HVH-650M
Weight per kWp 43.8 kg/kWp 50.4 kg/kWp -6.5 kg/kWp for 72HVH-650M
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
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 144 144 Same
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#219 vs #51
72HVDF-665M leads by 168 places
Power density
#233 vs #42
72HVDF-665M leads by 191 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#351 vs #3,742
72HVH-650M leads by 3,391 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#814 vs #414
72HVDF-665M leads by 400 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-670M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-665M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-660M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-655M
The same specification on paper
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-645M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-72HVH-650M vs Longi Solar LR7-72HVH-640M
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-72HVH-650M or Longi Solar LR7-72HVDF-665M?
According to our database: Longi Solar LR7-72HVDF-665M has higher module efficiency (24.60% vs 24.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-72HVH-650M and Longi Solar LR7-72HVDF-665M?
Longi Solar LR7-72HVH-650M has a module efficiency of 24.10%, while Longi Solar LR7-72HVDF-665M is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-72HVH-650M use vs Longi Solar LR7-72HVDF-665M?
Longi Solar LR7-72HVH-650M uses N-type cells; Longi Solar LR7-72HVDF-665M 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 LR7-72HVH-650M and Longi Solar LR7-72HVDF-665M?
Longi Solar LR7-72HVH-650M has a 30 years power warranty; Longi Solar LR7-72HVDF-665M 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 LR7-72HVH-650M and Longi Solar LR7-72HVDF-665M bifacial panels?
Longi Solar LR7-72HVDF-665M is bifacial (captures light from both faces); Longi Solar LR7-72HVH-650M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 174 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.