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685 vs 700 16 of 19 identical Swap Change panels

LEDVANCE M685~705N66UB-SF-F7-685 vs LEDVANCE M685~705N66UB-SF-F7-700

LEDVANCE M685~705N66UB-SF-F7-685
LEDVANCE
M685~705N66UB-SF-F7-685
685 Wp 22.05 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
LEDVANCE M685~705N66UB-SF-F7-700
LEDVANCE
M685~705N66UB-SF-F7-700
700 Wp 22.53 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

700 leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 685 700 Difference
Module efficiency 22.05 % 22.53 % 0.48 pp more efficient
Power density 220.5 Wp/m² 225.3 Wp/m² 4.8 Wp/m² higher
Rated power 685 Wp 700 Wp 15 W more power
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.
685
22,983 kWh
700
23,486 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 685 700
Standard test conditions 25 °C 100.0% of rated power 685 W 700 W
Cool, bright day 40 °C 95.5% of rated power 654 W 669 W
Typical summer roof 55 °C 91.0% of rated power 623 W 637 W
Hot roof 70 °C 86.5% of rated power 593 W 606 W
03

Full specification

Parameter 685 700 Difference
Power and efficiency
Rated power 685 Wp 700 Wp +15 W for 700
Module efficiency 22.05 % 22.53 % +0.48 pp for 700
Power density 220.5 Wp/m² 225.3 Wp/m² +4.8 Wp/m² for 700
Open-circuit voltage 47.60 V 48.00 V Effectively the same
Voltage at max power 39.90 V 40.50 V Effectively the same
Short-circuit current 18.20 A 18.32 A Effectively the same
Current at max power 17.18 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 50.4 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

Against the whole database

14,005 panels
Efficiency
#6,233 vs #3,982
700 leads by 2,251 places
Power density
#6,208 vs #3,989
700 leads by 2,219 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#3,732 vs #2,850
700 leads by 882 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#482 vs #213
700 leads by 269 places
05

More useful comparisons

Open the full database
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LEDVANCE M685~705N66UB-SF-F7-685 vs LEDVANCE M685~705N66UB-SF-F7-690
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: LEDVANCE M685~705N66UB-SF-F7-685 or LEDVANCE M685~705N66UB-SF-F7-700?
According to our database: LEDVANCE M685~705N66UB-SF-F7-700 has higher module efficiency (22.53% vs 22.05%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of LEDVANCE M685~705N66UB-SF-F7-685 and LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M685~705N66UB-SF-F7-685 has a module efficiency of 22.05%, 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 M685~705N66UB-SF-F7-685 use vs LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M685~705N66UB-SF-F7-685 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 M685~705N66UB-SF-F7-685 and LEDVANCE M685~705N66UB-SF-F7-700?
LEDVANCE M685~705N66UB-SF-F7-685 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 M685~705N66UB-SF-F7-685 and LEDVANCE M685~705N66UB-SF-F7-700 bifacial panels?
Both LEDVANCE M685~705N66UB-SF-F7-685 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.