Jetion JT745SLk(B) vs Jetion JT725SLk(B)
VS
The verdict
JT745SLk(B) leads on the differences that matter
The largest is module efficiency: 0.60 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
JT745SLk(B)
JT725SLk(B)
Difference
Module efficiency
24.00 %
23.40 %
0.60 pp more efficient
Power density
239.8 Wp/m²
233.4 Wp/m²
6.4 Wp/m² higher
Rated power
745 Wp
725 Wp
20 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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JT745SLk(B)
25,385 kWh
JT725SLk(B)
24,704 kWh
Lifetime gap
681 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JT745SLk(B)
JT725SLk(B)
Standard test conditions
25 °C
100.0% of rated power
745 W
725 W
Cool, bright day
40 °C
96.4% of rated power
718 W
699 W
Typical summer roof
55 °C
92.8% of rated power
691 W
673 W
Hot roof
70 °C
89.2% of rated power
665 W
647 W
03
Full specification
Parameter
JT745SLk(B)
JT725SLk(B)
Difference
Power and efficiency
Rated power
745 Wp
725 Wp
+20 W for JT745SLk(B)
Module efficiency
24.00 %
23.40 %
+0.60 pp for JT745SLk(B)
Power density
239.8 Wp/m²
233.4 Wp/m²
+6.4 Wp/m² for JT745SLk(B)
Open-circuit voltage
50.65 V
50.45 V
Effectively the same
Voltage at max power
42.68 V
42.52 V
Effectively the same
Short-circuit current
18.62 A
18.26 A
Effectively the same
Current at max power
17.46 A
17.06 A
Effectively the same
Temperature
Temperature coefficient
-0.240 %/°C
-0.240 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2384x1303x33 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
36.4 kg
36.4 kg
Same
Weight per kWp
48.9 kg/kWp
50.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.30 %/yr
0.30 %/yr
Same
Technology
Cell technology
HJT
HJT
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#303
vs
#882
JT745SLk(B) leads by 579 places
Power density
#339
vs
#936
JT745SLk(B) leads by 597 places
Heat behaviour
#13
vs
#13
Tied - the same position in the database
Weight
#2,534
vs
#3,667
JT745SLk(B) leads by 1,133 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#97
vs
#242
JT745SLk(B) leads by 145 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Jetion JT745SLk(B) or Jetion JT725SLk(B)?
According to our database: Jetion JT745SLk(B) has higher module efficiency (24.00% vs 23.40%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jetion JT745SLk(B) and Jetion JT725SLk(B)?
Jetion JT745SLk(B) has a module efficiency of 24.00%, while Jetion JT725SLk(B) is 23.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jetion JT745SLk(B) use vs Jetion JT725SLk(B)?
Jetion JT745SLk(B) uses HJT cells; Jetion JT725SLk(B) uses HJT. 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 Jetion JT745SLk(B) and Jetion JT725SLk(B)?
Jetion JT745SLk(B) has a 30 years power warranty; Jetion JT725SLk(B) 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.
Are Jetion JT745SLk(B) and Jetion JT725SLk(B) bifacial panels?
Both Jetion JT745SLk(B) and Jetion JT725SLk(B) are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.
Shop prices: See 2 Jetion 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.