I use an SD mini fitting and the 901 seems to be going the way of the dodo, so I'm going to get a 501 adapter and start using 501 attys and carts. Problem is, there's so many different types. TW has regular, mega, titan, tornado and low-resistance. Can someone explain what this all means and what the differences are?
TIA.
On the TW stuff - the regular 510 atty is 2.1-2.3Ω.
The mega (the one that is the same diameter as a regular 510 battery) is also the same ohms but it's longer and holds 1.5ml ejuice in the matching cartridge (regular 510 cart is @.8ml).
The titan is the 'regular' atty.
The tornado/eGo has two different types of attys but only one at TW right now - the 'mega eGo atty' (cylinder type). Again, 2.1Ω and it has a matching cartridge that is 2.5ml capacity - good for around 4 hours without refill. And there's the 'cone/atty' (sold elsewhere - cignot has them), 2.1Ω and again a matching cartridge that holds 1.5ml (2.5 hours worth - ymmv).
[note that with the 'mega', the cylinder type and cone/atty type they all need the corresponding cartridges. With the regular and the LR you can use your 901 carts on the 510. I think they fit better than the regular 510 cart. ]
The LR is a 1.5Ω atty that is good for the Tornado/eGo batts that run at around 3.2-3.4Volts but would be too hot for the true 3.7v SD.
The mega eGo and cone/attys would not fit the SD without some modification. They have a 'skirt' that extends past the batt connection (so they screw into the 'cone' threads on the Tornado) and that would have to be cut off or some extension used to be used with the SD. In fact, having the 901 to 510 adapter might work but I haven't tried that, not having an SD myself.
There are also some cartomizers available for the 510 - the 'joye' carto which TW sells as titan/tornado cartos:
510 TITAN/TORNADO PRE-FILLED CARTOMIZERS-Tobacco and Menthol
... which would work on the SD with an adapter:
Adapter for connecting a DSE901 or KR808D-1 battery with a Joye510 atomizer
And there are several other 510 cartomizers available elsewhere with a variety of different ohm ratings. Again, with the SD at 3.7volts - you want to stay above 2.0Ω (or greater if you're vaping lighter flavors).
And you could just get a Tornado battery to try - you would need the usb quick charger and also a cone if you use the LR or regular atty. But no cone is needed if you go to the cylinder or cone/atty set up.