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JT800SXt(B) vs JT750SLk(B) 6 of 19 identical Swap Change panels

Jetion JT800SXt(B) vs Jetion JT750SLk(B)

Jetion
JT800SXt(B)
800 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jetion JT750SLk(B)
Jetion
JT750SLk(B)
750 Wp 24.10 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

JT750SLk(B) leads on the differences that matter

The largest is temperature coefficient: 0.050 %/°C better in heat. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter JT800SXt(B) JT750SLk(B) Difference
Temperature coefficient -0.290 %/°C -0.240 %/°C 0.050 %/°C better in heat
Rated power 800 Wp 750 Wp 50 W more power
Weight 40.0 kg 36.4 kg 3.6 kg lighter
Module efficiency 23.70 % 24.10 % 0.40 pp more efficient
Product warranty 12 yrs 15 yrs 3 yrs longer
Annual degradation 0.40 %/yr 0.30 %/yr 0.10 %/yr slower
Module area 3.381 m² 3.106 m² 0.275 m² apart
Open-circuit voltage 54.36 V 50.70 V 3.66 V apart
Power density 236.6 Wp/m² 241.4 Wp/m² 4.8 Wp/m² higher
Cell technology TOPCon HJT TOPCon vs HJT
Cell count 144 132 12 cells apart
Voltage at max power 45.67 V 42.72 V 2.95 V apart
Dimensions 2595x1303x33 mm 2384x1303x33 mm 2595x1303x33 mm vs 2384x1303x33 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
JT800SXt(B)
26,842 kWh
JT750SLk(B)
25,556 kWh
Lifetime gap
1,286 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JT800SXt(B) JT750SLk(B)
Standard test conditions 25 °C 100.0% of rated power 800 W 750 W
Cool, bright day 40 °C 95.7% of rated power 765 W 723 W
Typical summer roof 55 °C 91.3% of rated power 730 W 696 W
Hot roof 70 °C 87.0% of rated power 696 W 669 W
03

Full specification

Parameter JT800SXt(B) JT750SLk(B) Difference
Power and efficiency
Rated power 800 Wp 750 Wp +50 W for JT800SXt(B)
Module efficiency 23.70 % 24.10 % +0.40 pp for JT750SLk(B)
Power density 236.6 Wp/m² 241.4 Wp/m² +4.8 Wp/m² for JT750SLk(B)
Open-circuit voltage 54.36 V 50.70 V 3.66 V apart
Voltage at max power 45.67 V 42.72 V 2.95 V apart
Short-circuit current 18.72 A 18.71 A Effectively the same
Current at max power 17.53 A 17.56 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.240 %/°C +0.050 %/°C for JT750SLk(B)
Mechanical
Dimensions 2595x1303x33 mm 2384x1303x33 mm 2595x1303x33 mm vs 2384x1303x33 mm
Module area 3.381 m² 3.106 m² 0.275 m² apart
Weight 40.0 kg 36.4 kg -3.6 kg for JT750SLk(B)
Weight per kWp 50.0 kg/kWp 48.5 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 15 yrs +3 yrs for JT750SLk(B)
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.30 %/yr -0.10 %/yr for JT750SLk(B)
Technology
Cell technology TOPCon HJT TOPCon vs HJT
Cell type Monocrystalline Monocrystalline Same
Cell count 144 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#517 vs #219
JT750SLk(B) leads by 298 places
Power density
#612 vs #219
JT750SLk(B) leads by 393 places
Heat behaviour
#2,165 vs #13
JT750SLk(B) leads by 2,152 places
Weight
#3,317 vs #2,337
JT750SLk(B) leads by 980 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#35 vs #72
JT800SXt(B) leads by 37 places
05

More useful comparisons

Open the full database
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Jetion JT800SXt(B) vs Jetion JT785SXt(B)
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Jetion JT800SXt(B) vs Jetion JT775SXt(B)
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Jetion JT750SLk(B) vs Jetion JT755SLk(B)
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jetion JT800SXt(B) or Jetion JT750SLk(B)?
According to our database: Jetion JT750SLk(B) has higher module efficiency (24.10% vs 23.70%); 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 JT800SXt(B) and Jetion JT750SLk(B)?
Jetion JT800SXt(B) has a module efficiency of 23.70%, while Jetion JT750SLk(B) is 24.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jetion JT800SXt(B) use vs Jetion JT750SLk(B)?
Jetion JT800SXt(B) uses TOPCon cells; Jetion JT750SLk(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 JT800SXt(B) and Jetion JT750SLk(B)?
Jetion JT800SXt(B) has a 30 years power warranty; Jetion JT750SLk(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 JT800SXt(B) and Jetion JT750SLk(B) bifacial panels?
Both Jetion JT800SXt(B) and Jetion JT750SLk(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.