I've been lurking around here since I started vaping. Got my first ego bat and never touched another analog. Now I'm on a zombie provari and preordered my first box mod. Loving my patriot rda, in the market for an American made RTA right now. Reasons for posting are some questions about the sony vtc4's. Been reading about chargers and batteries getting warm and was wondering if it's normal. Never had a problem with the aw imr's but have been reading the horror stories and would rather NOT burn my house down. What kind of charger should be used for these batteries?