One Battery Makes it Better
ProVari Battery
The standard ProVari takes a single 18490/18500 battery.
The ProVari uses a special boost circuit to adjust the voltage to your desired level and it only needs a single battery to operate.
Single battery devices are the safest electronic cigarettes you can own!
We recommend only using AW IMR high drain batteries in your ProVari.
You must use batteries that have a positive button on the top. Flat top batteries will not work. Installing magnet(s) on top of your battery is very dangrous and will void the warranty.
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As for a Vivi
tank, any battery will work as long as it takes a 510 connection, or you have an adapter to accommodate a 510 connection.
Twist, Spinners, Vamo, etc will all work just fine for that tank.