I'm new to vaping and I'm still trying to figure out what e-cig is for me. I've ordered a two piece design (808D-1) but I would also like to give a three piece design a try. The Sidesho seams to be the size I'm looking for. (I'm not really wanting anything bulky at this point) Could someone please tell me what kind of battery it uses? Is it considered a M401 or 403? What have your experiences been with the Sidesho compared to other similar size e-cigs? How often would I need to charge it with lite vaping?