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485M vs 475M 15 of 18 identical Swap Change panels

Longi Solar LR7-54HVB-485M vs Longi Solar LR7-54HVB-475M

Longi Solar LR7-54HVB-485M
LR7-54HVB-485M
485 Wp 23.80 % N-type
Open panel page Datasheet PDF
VS
Longi Solar LR7-54HVB-475M
LR7-54HVB-475M
475 Wp 23.30 % N-type
Open panel page Datasheet PDF
The verdict

485M leads on the differences that matter

The largest is module efficiency: 0.50 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences
How alike are they
15 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 18 parameters
Parameter 485M 475M Difference
Module efficiency 23.80 % 23.30 % 0.50 pp more efficient
Power density 237.6 Wp/m² 232.7 Wp/m² 4.9 Wp/m² higher
Rated power 485 Wp 475 Wp 10 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.
485M
16,399 kWh
475M
16,061 kWh
Lifetime gap
338 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 485M 475M
Standard test conditions 25 °C 100.0% of rated power 485 W 475 W
Cool, bright day 40 °C 96.1% of rated power 466 W 456 W
Typical summer roof 55 °C 92.2% of rated power 447 W 438 W
Hot roof 70 °C 88.3% of rated power 428 W 419 W
03

Full specification

Parameter 485M 475M Difference
Power and efficiency
Rated power 485 Wp 475 Wp +10 W for 485M
Module efficiency 23.80 % 23.30 % +0.50 pp for 485M
Power density 237.6 Wp/m² 232.7 Wp/m² +4.9 Wp/m² for 485M
Open-circuit voltage 40.40 V 40.18 V Effectively the same
Voltage at max power 33.40 V 33.16 V Effectively the same
Short-circuit current 15.23 A 15.03 A Effectively the same
Current at max power 14.53 A 14.33 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 1800x1134x30 mm 1800x1134x30 mm Same
Module area 2.041 m² 2.041 m² Same
Weight 21.6 kg 21.6 kg Same
Weight per kWp 44.5 kg/kWp 45.5 kg/kWp Effectively the same
Warranty and degradation
Product warranty - - Neither datasheet publishes this
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 108 108 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#433 vs #1,017
485M leads by 584 places
Power density
#495 vs #1,189
485M leads by 694 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#465 vs #743
485M leads by 278 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,755 vs #9,535
485M leads by 780 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-54HVB-485M vs Longi Solar LR7-54HVB-495M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-54HVB-485M vs Longi Solar LR7-54HVB-490M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-54HVB-485M vs Longi Solar LR7-54HVB-480M
One difference: module efficiency
Same manufacturer
Longi Solar LR7-54HVB-485M vs Longi Solar LR7-72HVHF-670M
9 differences, the largest is module efficiency
Same manufacturer
Longi Solar LR7-54HVB-485M vs Longi Solar LR8-66HYD-670M
14 differences, the largest is module efficiency
Same manufacturer
Longi Solar LR7-54HVB-485M vs Longi Solar LR7-72HVH-670M
9 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-54HVB-485M or Longi Solar LR7-54HVB-475M?
According to our database: Longi Solar LR7-54HVB-485M has higher module efficiency (23.80% vs 23.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-54HVB-485M and Longi Solar LR7-54HVB-475M?
Longi Solar LR7-54HVB-485M has a module efficiency of 23.80%, while Longi Solar LR7-54HVB-475M is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-54HVB-485M use vs Longi Solar LR7-54HVB-475M?
Longi Solar LR7-54HVB-485M uses N-type cells; Longi Solar LR7-54HVB-475M 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-485M and Longi Solar LR7-54HVB-475M?
Longi Solar LR7-54HVB-485M has a 30 years power warranty; Longi Solar LR7-54HVB-475M 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 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.