JA Solar JAM78S30-600/MR vs JA Solar JAM78S30-605/MR
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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 (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
600/MR
19,445 kWh
605/MR
19,607 kWh
Lifetime gap
162 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
600/MR
605/MR
Standard test conditions
25 °C
100.0% of rated power
600 W
605 W
Cool, bright day
40 °C
94.8% of rated power
569 W
573 W
Typical summer roof
55 °C
89.5% of rated power
537 W
541 W
Hot roof
70 °C
84.2% of rated power
506 W
510 W
03
Full specification
Parameter
600/MR
605/MR
Difference
Power and efficiency
Rated power
600 Wp
605 Wp
Effectively the same
Module efficiency
21.50 %
21.60 %
Effectively the same
Power density
214.6 Wp/m²
216.4 Wp/m²
Effectively the same
Open-circuit voltage
53.50 V
53.61 V
Effectively the same
Voltage at max power
45.30 V
45.53 V
Effectively the same
Short-circuit current
14.03 A
14.08 A
Effectively the same
Current at max power
13.25 A
13.29 A
Effectively the same
Temperature
Temperature coefficient
-0.350 %/°C
-0.350 %/°C
Same
Mechanical
Dimensions
2465x1134x35 mm
2465x1134x35 mm
Same
Module area
2.795 m²
2.795 m²
Same
Weight
30.5 kg
30.5 kg
Same
Weight per kWp
50.8 kg/kWp
50.4 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
156
Same
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#8,022
vs
#7,716
605/MR leads by 306 places
Power density
#8,265
vs
#7,665
605/MR leads by 600 places
Heat behaviour
#10,489
vs
#10,489
Tied - the same position in the database
Weight
#4,253
vs
#3,809
605/MR leads by 444 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#5,936
vs
#5,638
605/MR leads by 298 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: JA Solar JAM78S30-600/MR or JA Solar JAM78S30-605/MR?
According to our database: JA Solar JAM78S30-605/MR has higher module efficiency (21.60% vs 21.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAM78S30-600/MR and JA Solar JAM78S30-605/MR?
JA Solar JAM78S30-600/MR has a module efficiency of 21.50%, while JA Solar JAM78S30-605/MR is 21.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM78S30-600/MR use vs JA Solar JAM78S30-605/MR?
JA Solar JAM78S30-600/MR uses PERC cells; JA Solar JAM78S30-605/MR 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 JAM78S30-600/MR and JA Solar JAM78S30-605/MR?
JA Solar JAM78S30-600/MR has a 25 years power warranty; JA Solar JAM78S30-605/MR 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 318 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.