So I got my silver mini blem almost a week ago, I just ordered a V2 blem blue regular size? with extension cap tonight. It's not even because I think I need the extra battery life, I just love my mini, and I already can't imagine sending it in for repair and not having one. I already have 18650 batteries, I bought a lavatube v1 early on. I'm thinking that and my 650 ego's I will use for people that want to try vaping, so farthere have been quite a few interested.