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JT750SLk(B) vs JT775SXt(B) 5 of 19 identical Swap Change panels

Jetion JT750SLk(B) vs Jetion JT775SXt(B)

Jetion JT750SLk(B)
Jetion
JT750SLk(B)
750 Wp 24.10 % HJT Bifacial
Open panel page Datasheet PDF
VS
Jetion
JT775SXt(B)
775 Wp 22.90 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JT750SLk(B) leads on the differences that matter

The largest is module efficiency: 1.20 pp more efficient. 5 of 19 comparable parameters are identical.

See all 14 differences
How alike are they
5 of 19 comparable
parameters are identical
identical differs
01

What actually differs

14 of 19 parameters
Parameter JT750SLk(B) JT775SXt(B) Difference
Module efficiency 24.10 % 22.90 % 1.20 pp more efficient
Temperature coefficient -0.240 %/°C -0.290 %/°C 0.050 %/°C better in heat
Power density 241.4 Wp/m² 229.2 Wp/m² 12.2 Wp/m² higher
Weight 36.4 kg 40.0 kg 3.6 kg lighter
Rated power 750 Wp 775 Wp 25 W more power
Product warranty 15 yrs 12 yrs 3 yrs longer
Annual degradation 0.30 %/yr 0.40 %/yr 0.10 %/yr slower
Module area 3.106 m² 3.381 m² 0.275 m² apart
Open-circuit voltage 50.70 V 53.41 V 2.71 V apart
Cell technology HJT TOPCon HJT vs TOPCon
Weight per kWp 48.5 kg/kWp 51.6 kg/kWp 3.1 kg/kWp lighter
Cell count 132 144 12 cells apart
Voltage at max power 42.72 V 44.96 V 2.24 V apart
Dimensions 2384x1303x33 mm 2595x1303x33 mm 2384x1303x33 mm vs 2595x1303x33 mm
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
JT750SLk(B)
25,556 kWh
JT775SXt(B)
26,003 kWh
Lifetime gap
447 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JT750SLk(B) JT775SXt(B)
Standard test conditions 25 °C 100.0% of rated power 750 W 775 W
Cool, bright day 40 °C 95.7% of rated power 723 W 741 W
Typical summer roof 55 °C 91.3% of rated power 696 W 708 W
Hot roof 70 °C 87.0% of rated power 669 W 674 W
03

Full specification

Parameter JT750SLk(B) JT775SXt(B) Difference
Power and efficiency
Rated power 750 Wp 775 Wp +25 W for JT775SXt(B)
Module efficiency 24.10 % 22.90 % +1.20 pp for JT750SLk(B)
Power density 241.4 Wp/m² 229.2 Wp/m² +12.2 Wp/m² for JT750SLk(B)
Open-circuit voltage 50.70 V 53.41 V 2.71 V apart
Voltage at max power 42.72 V 44.96 V 2.24 V apart
Short-circuit current 18.71 A 18.45 A Effectively the same
Current at max power 17.56 A 17.24 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.290 %/°C +0.050 %/°C for JT750SLk(B)
Mechanical
Dimensions 2384x1303x33 mm 2595x1303x33 mm 2384x1303x33 mm vs 2595x1303x33 mm
Module area 3.106 m² 3.381 m² 0.275 m² apart
Weight 36.4 kg 40.0 kg -3.6 kg for JT750SLk(B)
Weight per kWp 48.5 kg/kWp 51.6 kg/kWp -3.1 kg/kWp for JT750SLk(B)
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for JT750SLk(B)
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.30 %/yr 0.40 %/yr -0.10 %/yr for JT750SLk(B)
Technology
Cell technology HJT TOPCon HJT vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#219 vs #2,359
JT750SLk(B) leads by 2,140 places
Power density
#219 vs #2,377
JT750SLk(B) leads by 2,158 places
Heat behaviour
#13 vs #2,165
JT750SLk(B) leads by 2,152 places
Weight
#2,337 vs #4,981
JT750SLk(B) leads by 2,644 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#72 vs #169
JT750SLk(B) leads by 97 places
05

More useful comparisons

Open the full database
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The same specification on paper
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Jetion JT750SLk(B) vs Jetion JT740SLk(B)
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Jetion JT750SLk(B) vs Jetion JT725SLk(B)
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jetion JT750SLk(B) or Jetion JT775SXt(B)?
According to our database: Jetion JT750SLk(B) has higher module efficiency (24.10% vs 22.90%); Jetion JT750SLk(B) tolerates heat better (temp coeff -0.240%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jetion JT750SLk(B) and Jetion JT775SXt(B)?
Jetion JT750SLk(B) has a module efficiency of 24.10%, while Jetion JT775SXt(B) is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jetion JT750SLk(B) use vs Jetion JT775SXt(B)?
Jetion JT750SLk(B) uses HJT cells; Jetion JT775SXt(B) uses TOPCon. 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 JT750SLk(B) and Jetion JT775SXt(B)?
Jetion JT750SLk(B) has a 30 years power warranty; Jetion JT775SXt(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 JT750SLk(B) and Jetion JT775SXt(B) bifacial panels?
Both Jetion JT750SLk(B) and Jetion JT775SXt(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.

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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.