Haitai Solar JT705SLkB vs Haitai Solar JT720SLkB
VS
The verdict
JT720SLkB leads on the differences that matter
The largest is module efficiency: 0.50 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 3 differencesHow alike are they
15
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
3 of 18 parameters
What actually differs
Parameter
JT705SLkB
JT720SLkB
Difference
Module efficiency
22.70 %
23.20 %
0.50 pp more efficient
Power density
227.0 Wp/m²
231.8 Wp/m²
4.8 Wp/m² higher
Rated power
705 Wp
720 Wp
15 W more power
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.
JT705SLkB
23,654 kWh
JT720SLkB
24,157 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JT705SLkB
JT720SLkB
Standard test conditions
25 °C
100.0% of rated power
705 W
720 W
Cool, bright day
40 °C
96.4% of rated power
680 W
694 W
Typical summer roof
55 °C
92.8% of rated power
654 W
668 W
Hot roof
70 °C
89.2% of rated power
629 W
642 W
03
Full specification
Parameter
JT705SLkB
JT720SLkB
Difference
Power and efficiency
Rated power
705 Wp
720 Wp
+15 W for JT720SLkB
Module efficiency
22.70 %
23.20 %
+0.50 pp for JT720SLkB
Power density
227.0 Wp/m²
231.8 Wp/m²
+4.8 Wp/m² for JT720SLkB
Open-circuit voltage
50.15 V
50.60 V
Effectively the same
Voltage at max power
42.25 V
42.70 V
Effectively the same
Short-circuit current
17.49 A
17.67 A
Effectively the same
Current at max power
16.69 A
16.87 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
52.9 kg/kWp
51.8 kg/kWp
Effectively the same
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
14,129 panels
Against the whole database
Efficiency
#3,364
vs
#1,349
JT720SLkB leads by 2,015 places
Power density
#3,418
vs
#1,390
JT720SLkB leads by 2,028 places
Heat behaviour
#13
vs
#13
Tied - the same position in the database
Weight
#6,679
vs
#5,201
JT720SLkB leads by 1,478 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#750
vs
#334
JT720SLkB leads by 416 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Haitai Solar JT705SLkB or Haitai Solar JT720SLkB?
According to our database: Haitai Solar JT720SLkB has higher module efficiency (23.20% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Haitai Solar JT705SLkB and Haitai Solar JT720SLkB?
Haitai Solar JT705SLkB has a module efficiency of 22.70%, while Haitai Solar JT720SLkB is 23.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Haitai Solar JT705SLkB use vs Haitai Solar JT720SLkB?
Haitai Solar JT705SLkB uses HJT cells; Haitai Solar JT720SLkB 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 JT705SLkB and Haitai Solar JT720SLkB?
Haitai Solar JT705SLkB has a 30 years power warranty; Haitai Solar JT720SLkB 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 JT705SLkB and Haitai Solar JT720SLkB bifacial panels?
Both Haitai Solar JT705SLkB and Haitai Solar JT720SLkB 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.