JA Solar MYM2072-385 vs JA Solar MYM2072-380
VS
The verdict
385 leads on the differences that matter
The largest is module efficiency: 0.26 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See the one differenceHow alike are they
17
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
1 of 18 parameters
What actually differs
Parameter
385
380
Difference
Module efficiency
19.84 %
19.58 %
0.26 pp more efficient
02
What it means on a roof
Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.370 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
385
12,918 kWh
380
12,750 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
385
380
Standard test conditions
25 °C
100.0% of rated power
385 W
380 W
Cool, bright day
40 °C
94.5% of rated power
364 W
359 W
Typical summer roof
55 °C
88.9% of rated power
342 W
338 W
Hot roof
70 °C
83.3% of rated power
321 W
317 W
03
Full specification
Parameter
385
380
Difference
Power and efficiency
Rated power
385 Wp
380 Wp
Effectively the same
Module efficiency
19.84 %
19.58 %
+0.26 pp for 385
Power density
198.4 Wp/m²
195.8 Wp/m²
Effectively the same
Open-circuit voltage
49.10 V
48.90 V
Effectively the same
Voltage at max power
40.30 V
40.00 V
Effectively the same
Short-circuit current
10.10 A
10.00 A
Effectively the same
Current at max power
9.55 A
9.50 A
Effectively the same
Temperature
Temperature coefficient
-0.370 %/°C
-0.370 %/°C
Same
Mechanical
Dimensions
1956x992x40 mm
1956x992x40 mm
Same
Module area
1.940 m²
1.940 m²
Same
Weight
22.5 kg
22.5 kg
Same
Weight per kWp
58.4 kg/kWp
59.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
-
-
Neither datasheet publishes this
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
72
72
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#12,408
vs
#12,623
385 leads by 215 places
Power density
#12,383
vs
#12,595
385 leads by 212 places
Heat behaviour
#13,081
vs
#13,081
Tied - the same position in the database
Weight
#11,726
vs
#12,047
385 leads by 321 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#12,529
vs
#12,640
385 leads by 111 places
05
Open the full database
More useful comparisons
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2072-375
3 differences, the largest is module efficiency
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2072-370
4 differences, the largest is module efficiency
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2072-365
4 differences, the largest is module efficiency
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2060-325
7 differences, the largest is rated power
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2060-320
7 differences, the largest is rated power
Same series, other bin
JA Solar MYM2072-385 vs JA Solar MYM2060-315
9 differences, the largest is rated power
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: JA Solar MYM2072-385 or JA Solar MYM2072-380?
According to our database: JA Solar MYM2072-385 has higher module efficiency (19.84% vs 19.58%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar MYM2072-385 and JA Solar MYM2072-380?
JA Solar MYM2072-385 has a module efficiency of 19.84%, while JA Solar MYM2072-380 is 19.58%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar MYM2072-385 use vs JA Solar MYM2072-380?
JA Solar MYM2072-385 uses PERC cells; JA Solar MYM2072-380 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 JA Solar MYM2072-385 and JA Solar MYM2072-380?
JA Solar MYM2072-385 has a 25 years power warranty; JA Solar MYM2072-380 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 390 JA 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.