Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)
VS
The verdict
D1+/AC (Power class 435W) leads on the differences that matter
The largest is module efficiency: 0.50 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
E1+/AC (Power class 425W)
D1+/AC (Power class 435W)
Difference
Module efficiency
21.80 %
22.30 %
0.50 pp more efficient
Power density
217.6 Wp/m²
222.8 Wp/m²
5.1 Wp/m² higher
Rated power
425 Wp
435 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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
E1+/AC (Power class 425W)
14,338 kWh
D1+/AC (Power class 435W)
14,676 kWh
Lifetime gap
338 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
E1+/AC (Power class 425W)
D1+/AC (Power class 435W)
Standard test conditions
25 °C
100.0% of rated power
425 W
435 W
Cool, bright day
40 °C
95.5% of rated power
406 W
415 W
Typical summer roof
55 °C
91.0% of rated power
387 W
396 W
Hot roof
70 °C
86.5% of rated power
368 W
376 W
03
Full specification
Parameter
E1+/AC (Power class 425W)
D1+/AC (Power class 435W)
Difference
Power and efficiency
Rated power
425 Wp
435 Wp
+10 W for D1+/AC (Power class 435W)
Module efficiency
21.80 %
22.30 %
+0.50 pp for D1+/AC (Power class 435W)
Power density
217.6 Wp/m²
222.8 Wp/m²
+5.1 Wp/m² for D1+/AC (Power class 435W)
Open-circuit voltage
39.03 V
39.60 V
Effectively the same
Voltage at max power
32.74 V
33.14 V
Effectively the same
Short-circuit current
13.66 A
13.82 A
Effectively the same
Current at max power
12.98 A
13.13 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
1722x1134x40 mm
1722x1134x40 mm
Same
Module area
1.953 m²
1.953 m²
Same
Weight
22.9 kg
22.9 kg
Same
Weight per kWp
54.0 kg/kWp
52.8 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.33 %/yr
0.33 %/yr
Same
Technology
Cell technology
N-type
N-type
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
216
216
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#7,022
vs
#5,100
D1+/AC (Power class 435W) leads by 1,922 places
Power density
#7,172
vs
#5,150
D1+/AC (Power class 435W) leads by 2,022 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#8,183
vs
#6,443
D1+/AC (Power class 435W) leads by 1,740 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#9,093
vs
#8,167
D1+/AC (Power class 435W) leads by 926 places
05
Open the full database
More useful comparisons
Same series, other bin
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.TRON BLK M-G2.H1+/AC (Power class 440W)
3 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.TRON BLK M-G2.C1+/AC (Power class 430W)
One difference: module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)
One difference: module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.TRON BLK M-G2+/AC (Power class 415W)
3 differences, the largest is module efficiency
Same manufacturer
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675
15 differences, the largest is temperature coefficient
Same manufacturer
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670
16 differences, the largest is temperature coefficient
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) or Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)?
According to our database: Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435 W) has higher module efficiency (22.30% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) and Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)?
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 W) has a module efficiency of 21.80%, while Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435 W) is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) use vs Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)?
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 W) uses N-type cells; Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435 W) 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 Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W) and Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)?
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 W) has a 25 years power warranty; Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435 W) has a 25 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 28 Q-Cells 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.