Hi Souls2VA!

Welcome!
Do not use a kick with the VV device.
You can use 16340s or 18350s on this device. The recommended are the AW18350 IMRs....and we've found them to have about the best run time in our house. You can get through about 5.5mls on a full charge with a 2.5Ω atty and the mod set at about 4.5 volts. Do not use unprotected Li-Ion batteries. Just don't do it.
You can also use the batteries recommended by Buzzkill for his BuzzPro device.