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JT755SLk(B) vs JT775SXt(B) 5 of 19 identical Swap Change panels

Jetion JT755SLk(B) vs Jetion JT775SXt(B)

Jetion JT755SLk(B)
Jetion
JT755SLk(B)
755 Wp 24.30 % HJT Bifacial
Open panel page Datasheet PDF
VS
Jetion
JT775SXt(B)
775 Wp 22.90 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JT755SLk(B) leads on the differences that matter

The largest is module efficiency: 1.40 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 JT755SLk(B) JT775SXt(B) Difference
Module efficiency 24.30 % 22.90 % 1.40 pp more efficient
Temperature coefficient -0.240 %/°C -0.290 %/°C 0.050 %/°C better in heat
Power density 243.1 Wp/m² 229.2 Wp/m² 13.8 Wp/m² higher
Weight 36.4 kg 40.0 kg 3.6 kg lighter
Product warranty 15 yrs 12 yrs 3 yrs longer
Annual degradation 0.30 %/yr 0.40 %/yr 0.10 %/yr slower
Rated power 755 Wp 775 Wp 20 W more power
Module area 3.106 m² 3.381 m² 0.275 m² apart
Open-circuit voltage 50.75 V 53.41 V 2.66 V apart
Weight per kWp 48.2 kg/kWp 51.6 kg/kWp 3.4 kg/kWp lighter
Cell technology HJT TOPCon HJT vs TOPCon
Cell count 132 144 12 cells apart
Voltage at max power 42.76 V 44.96 V 2.20 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
JT755SLk(B)
25,726 kWh
JT775SXt(B)
26,003 kWh
Lifetime gap
277 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JT755SLk(B) JT775SXt(B)
Standard test conditions 25 °C 100.0% of rated power 755 W 775 W
Cool, bright day 40 °C 95.7% of rated power 728 W 741 W
Typical summer roof 55 °C 91.3% of rated power 701 W 708 W
Hot roof 70 °C 87.0% of rated power 673 W 674 W
03

Full specification

Parameter JT755SLk(B) JT775SXt(B) Difference
Power and efficiency
Rated power 755 Wp 775 Wp +20 W for JT775SXt(B)
Module efficiency 24.30 % 22.90 % +1.40 pp for JT755SLk(B)
Power density 243.1 Wp/m² 229.2 Wp/m² +13.8 Wp/m² for JT755SLk(B)
Open-circuit voltage 50.75 V 53.41 V 2.66 V apart
Voltage at max power 42.76 V 44.96 V 2.20 V apart
Short-circuit current 18.80 A 18.45 A Effectively the same
Current at max power 17.66 A 17.24 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.290 %/°C +0.050 %/°C for JT755SLk(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 JT755SLk(B)
Weight per kWp 48.2 kg/kWp 51.6 kg/kWp -3.4 kg/kWp for JT755SLk(B)
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for JT755SLk(B)
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.30 %/yr 0.40 %/yr -0.10 %/yr for JT755SLk(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
#131 vs #2,359
JT755SLk(B) leads by 2,228 places
Power density
#136 vs #2,377
JT755SLk(B) leads by 2,241 places
Heat behaviour
#13 vs #2,165
JT755SLk(B) leads by 2,152 places
Weight
#2,105 vs #4,981
JT755SLk(B) leads by 2,876 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#50 vs #169
JT755SLk(B) leads by 119 places
05

More useful comparisons

Open the full database
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5 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jetion JT755SLk(B) or Jetion JT775SXt(B)?
According to our database: Jetion JT755SLk(B) has higher module efficiency (24.30% vs 22.90%); Jetion JT755SLk(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 JT755SLk(B) and Jetion JT775SXt(B)?
Jetion JT755SLk(B) has a module efficiency of 24.30%, 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 JT755SLk(B) use vs Jetion JT775SXt(B)?
Jetion JT755SLk(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 JT755SLk(B) and Jetion JT775SXt(B)?
Jetion JT755SLk(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 JT755SLk(B) and Jetion JT775SXt(B) bifacial panels?
Both Jetion JT755SLk(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.