Skip to main content
JT720SLkB vs JT690SLkB 14 of 18 identical Swap Change panels

Haitai Solar JT720SLkB vs Haitai Solar JT690SLkB

Haitai Solar JT720SLkB
Haitai Solar
JT720SLkB
720 Wp 23.20 % HJT Bifacial Incomplete
Open panel page Datasheet PDF
VS
Haitai Solar JT690SLkB
Haitai Solar
JT690SLkB
690 Wp 22.20 % HJT Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

JT720SLkB leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences
How alike are they
14 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 18 parameters
Parameter JT720SLkB JT690SLkB Difference
Module efficiency 23.20 % 22.20 % 1.00 pp more efficient
Power density 231.8 Wp/m² 222.1 Wp/m² 9.7 Wp/m² higher
Rated power 720 Wp 690 Wp 30 W more power
Weight per kWp 51.8 kg/kWp 54.1 kg/kWp 2.3 kg/kWp lighter
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, 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.
JT720SLkB
24,157 kWh
JT690SLkB
23,151 kWh
Lifetime gap
1,006 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JT720SLkB JT690SLkB
Standard test conditions 25 °C 100.0% of rated power 720 W 690 W
Cool, bright day 40 °C 96.4% of rated power 694 W 665 W
Typical summer roof 55 °C 92.8% of rated power 668 W 640 W
Hot roof 70 °C 89.2% of rated power 642 W 615 W
03

Full specification

Parameter JT720SLkB JT690SLkB Difference
Power and efficiency
Rated power 720 Wp 690 Wp +30 W for JT720SLkB
Module efficiency 23.20 % 22.20 % +1.00 pp for JT720SLkB
Power density 231.8 Wp/m² 222.1 Wp/m² +9.7 Wp/m² for JT720SLkB
Open-circuit voltage 50.60 V 49.70 V Effectively the same
Voltage at max power 42.70 V 41.80 V Effectively the same
Short-circuit current 17.67 A 17.31 A Effectively the same
Current at max power 16.87 A 16.51 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 37.3 kg 37.3 kg Same
Weight per kWp 51.8 kg/kWp 54.1 kg/kWp -2.3 kg/kWp for JT720SLkB
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#1,349 vs #5,881
JT720SLkB leads by 4,532 places
Power density
#1,390 vs #5,797
JT720SLkB leads by 4,407 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#5,201 vs #8,354
JT720SLkB leads by 3,153 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#334 vs #1,276
JT720SLkB leads by 942 places
05

More useful comparisons

Open the full database
Same series, other bin
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar JT715SLkB
One difference: module efficiency
Same series, other bin
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar JT710SLkB
3 differences, the largest is module efficiency
Same series, other bin
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar JT705SLkB
3 differences, the largest is module efficiency
Same series, other bin
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar JT700SLkB
3 differences, the largest is module efficiency
Same series, other bin
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar JT695SLkB
3 differences, the largest is module efficiency
Same manufacturer
Haitai Solar
Haitai Solar JT720SLkB vs Haitai Solar CETC-455TR(GDF)/96
14 differences, the largest is temperature coefficient
06

Written summary

07

Questions about this pairing

Which panel is better: Haitai Solar JT720SLkB or Haitai Solar JT690SLkB?
According to our database: Haitai Solar JT720SLkB has higher module efficiency (23.20% vs 22.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Haitai Solar JT720SLkB and Haitai Solar JT690SLkB?
Haitai Solar JT720SLkB has a module efficiency of 23.20%, while Haitai Solar JT690SLkB is 22.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Haitai Solar JT720SLkB use vs Haitai Solar JT690SLkB?
Haitai Solar JT720SLkB uses HJT cells; Haitai Solar JT690SLkB 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 Haitai Solar JT720SLkB and Haitai Solar JT690SLkB?
Haitai Solar JT720SLkB has a 30 years power warranty; Haitai Solar JT690SLkB 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 Haitai Solar JT720SLkB and Haitai Solar JT690SLkB bifacial panels?
Both Haitai Solar JT720SLkB and Haitai Solar JT690SLkB 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.

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.