Hi all, i finally got around to picking up an encosure and some momentary switches. My questions is which batteries and how many to use. The enclosure is 3"x2"x1" so there is quite a bit of room in it. Any recommendations - i'm thinking about a 14500, mainly because i can use a ready made AA holder. All and any thoughts/advice welcome. EDIT - meant to say, i'll be using a 901 battery connection and atomizer.