My review from a long time MTL
nautilus and Kabuki P3 user:
After my P3 broke and could no longer use the P3 kabuki I saw the N2 and had the hope of it being close in flavour department than the N1.
I have been using the N2 for a month, 1.6
coils, power from 10-13W, 70/30 PG/VG
eliquid.
I hoped to get a flavour close to the kabuki, but no dice. Coil lasts about 2 weeks just as the N1.
This recipe, when vaped through the Kabuki, has what I would call a chameleon flavour: on inhale you feel the freshness of the mentol, along with mint, cola and lime with sour feeling "wrapping"; on exhale the strawberry flavour / smell kicks in, with some aniseed hints on the aftertaste. This is a very popular recipe among Spain's DIY vapers (1714 Evolved).
I would say Flavour is on par with a regular Nautilus, but IMHO has several cons vs N1:
1.- Worse, cumbersome refill vs N1.
Yes, N1 needs to be dissasembled too, but once you dissasemble the atomizer, then the base, it can be put upside-down (w/o the mouth tip) over a table, refill, screw back the base and be done.
On N2, after the atomizer is removed from the mod, the steel bell is a royal PITA to unscrew; after unscrewing it you need to either screw back the base to the mod, or use some sort of holder, as it won't be stable on a table for refill.
The fact of it having just 2ml makes this operation much more frequent and much more annoying, in fact I went back to N1.
Haven't even tried the 0.7 coil due to this... for me on a 2ml tank which is a PITA to refill, this is simply a no-no, would use a dripper instead.
2.- Airflow
Much more practical, and better "feeling" on the N1.
3.- 510 Leaking
It leaks on the 510 connector straight out from the box if you completely finish the eliquid, as the negative pressure is gone; N1 does the same but only with really old bases.
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Tjgoa: You can use any USB micro-B cable, your phone cable is fine, your mod has internal regulation circuitry, and all USB ports provide 5V no matter the cable used.
Nautilus BVC coils durability depends mainly on two factors: juice (as has been said sweteeners and some aditives will shorten its life) and power used, using the boost feature on your mod (if it has it) helps keeping the flavour and lengthening coil life.
I usually set it at 11W boost for 0.3s / 9.6W on new 1.6 coils, and as the coil wears out, rise those values to help keeping vapour production and taste, coils lasting between 2 and 3 weeks.
I prime and have always primed Nautilus coils with no leaks or gurgling. Close the AFC ring before tightening the cap will help to build negative pressure inside the tank: no leaks.