LEDVANCE M705N66UB-SF-F7 vs LEDVANCE M685~705N66UB-SF-F7-700
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
02
What it means on a roof
Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
M705N66UB-SF-F7
23,654 kWh
M685~705N66UB-SF-F7-700
23,486 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
M705N66UB-SF-F7
M685~705N66UB-SF-F7-700
Standard test conditions
25 °C
100.0% of rated power
705 W
700 W
Cool, bright day
40 °C
95.5% of rated power
673 W
669 W
Typical summer roof
55 °C
91.0% of rated power
642 W
637 W
Hot roof
70 °C
86.5% of rated power
610 W
606 W
03
Full specification
Parameter
M705N66UB-SF-F7
M685~705N66UB-SF-F7-700
Difference
Power and efficiency
Rated power
705 Wp
700 Wp
Effectively the same
Module efficiency
22.70 %
22.53 %
Effectively the same
Power density
227.0 Wp/m²
225.3 Wp/m²
Effectively the same
Open-circuit voltage
48.20 V
48.00 V
Effectively the same
Voltage at max power
40.70 V
40.50 V
Effectively the same
Short-circuit current
18.36 A
18.32 A
Effectively the same
Current at max power
17.33 A
17.29 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x35 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
34.5 kg
34.5 kg
Same
Weight per kWp
48.9 kg/kWp
49.3 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#3,307
vs
#3,982
M705N66UB-SF-F7 leads by 675 places
Power density
#3,361
vs
#3,989
M705N66UB-SF-F7 leads by 628 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#2,611
vs
#2,850
M705N66UB-SF-F7 leads by 239 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#166
vs
#213
M705N66UB-SF-F7 leads by 47 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: LEDVANCE M705N66UB-SF-F7 or LEDVANCE M685~705N66UB-SF-F7-700?
According to our database: LEDVANCE M705N66UB-SF-F7 has higher module efficiency (22.70% vs 22.53%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of LEDVANCE M705N66UB-SF-F7 and LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M705N66UB-SF-F7 has a module efficiency of 22.70%, while LEDVANCE M685~705N66UB-SF-F7-700 is 22.53%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does LEDVANCE M705N66UB-SF-F7 use vs LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M705N66UB-SF-F7 uses TOPCon cells; LEDVANCE M685~705N66UB-SF-F7-700 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 LEDVANCE M705N66UB-SF-F7 and LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M705N66UB-SF-F7 has a 30 years power warranty; LEDVANCE M685~705N66UB-SF-F7-700 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 LEDVANCE M705N66UB-SF-F7 and LEDVANCE M685~705N66UB-SF-F7-700 bifacial panels?
Both LEDVANCE M705N66UB-SF-F7 and LEDVANCE M685~705N66UB-SF-F7-700 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.