405W vs 425W 15 of 19 identical Swap Change panels

Lexron 405W vs Lexron 425W

Q: Which panel is better: Lexron 405W or Lexron 425W?

According to our database: Lexron 425W has higher module efficiency (21.37% vs 20.36%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Lexron 405W and Lexron 425W?

Lexron 405W has a module efficiency of 20.36%, while Lexron 425W is 21.37%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Lexron 405W use vs Lexron 425W?

Lexron 405W uses PERC cells; Lexron 425W uses PERC. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Lexron 405W and Lexron 425W?

Lexron 405W has a 30 years power warranty; Lexron 425W 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.

Lexron

405W

405 Wp 20.36 % PERC

Open panel page Datasheet PDF

Lexron

425W

425 Wp 21.37 % PERC

Open panel page Datasheet PDF

The verdict

425W leads on the differences that matter

The largest is module efficiency: 1.01 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences

How alike are they

15 of 19 comparable
parameters are identical

identical differs

What actually differs

4 of 19 parameters

Parameter 405W 425W Difference

Module efficiency 20.36 % 21.37 % 1.01 pp more efficient

Power density 203.6 Wp/m² 213.7 Wp/m² 10.1 Wp/m² higher

Rated power 405 Wp 425 Wp 20 W more power

Weight per kWp 54.3 kg/kWp 51.8 kg/kWp 2.6 kg/kWp lighter

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

Same temp coeff. for both panels (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

405W

13,337 kWh

425W

13,996 kWh

Lifetime gap

659 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 405W 425W

Standard test conditions 25 °C 100.0% of rated power 405 W 425 W

Cool, bright day 40 °C 94.8% of rated power 384 W 403 W

Typical summer roof 55 °C 89.5% of rated power 362 W 380 W

Hot roof 70 °C 84.2% of rated power 341 W 358 W

Full specification

Parameter 405W 425W Difference

Power and efficiency

Rated power 405 Wp 425 Wp +20 W for 425W

Module efficiency 20.36 % 21.37 % +1.01 pp for 425W

Power density 203.6 Wp/m² 213.7 Wp/m² +10.1 Wp/m² for 425W

Open-circuit voltage 49.66 V 50.38 V Effectively the same

Voltage at max power 41.38 V 41.98 V Effectively the same

Short-circuit current 10.32 A 10.68 A Effectively the same

Current at max power 9.79 A 10.12 A Effectively the same

Temperature

Temperature coefficient -0.350 %/°C -0.350 %/°C Same

Mechanical

Dimensions 1987x1001x35 mm 1987x1001x35 mm Same

Module area 1.989 m² 1.989 m² Same

Weight 22.0 kg 22.0 kg Same

Weight per kWp 54.3 kg/kWp 51.8 kg/kWp -2.6 kg/kWp for 425W

Warranty and degradation

Product warranty 12 yrs 12 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.45 %/yr 0.45 %/yr Same

Technology

Cell technology PERC PERC Same

Cell type Monocrystalline Monocrystalline Same

Cell count 72 72 Same

Bifacial No No Same

Against the whole database

14,005 panels

Efficiency

#11,709 vs #8,448

425W leads by 3,261 places

Power density

#11,674 vs #8,404

425W leads by 3,270 places

Heat behaviour

#10,419 vs #10,419

Tied - the same position in the database

Weight

#8,586 vs #5,132

425W leads by 3,454 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#11,615 vs #10,571

425W leads by 1,044 places

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Written summary

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Questions about this pairing

Which panel is better: Lexron 405W or Lexron 425W?

According to our database: Lexron 425 W has higher module efficiency (21.37% vs 20.36%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Lexron 405W and Lexron 425W?

Lexron 405 W has a module efficiency of 20.36%, while Lexron 425 W is 21.37%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Lexron 405W use vs Lexron 425W?

Lexron 405 W uses PERC cells; Lexron 425 W uses PERC. 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 Lexron 405W and Lexron 425W?

Lexron 405 W has a 30 years power warranty; Lexron 425 W 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.

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.