How do you like the eGo 18650? I've been looking for a cheap big battery mod as a backup. I've also been considering getting another eGo just for fun. One of these might be perfect, but they look kind of cheap. I think it's the way it looks with the shape of the cone that houses the button. Also, do you know if they are regulated? I use 4.8v NiMH in my Bolt right now and that's what I would prefer to use in the backup. Thanks!