So, I just bought a Blu premium pack, and when I got home and tried it, the flashing "charge now" lights came on. So I tried charging the pack, and that was successful (after a few hours). I put the battery in the charging slot of the pack, and... Nothing. I tried screwing it in, and it doesn't screw in. I contacted a friend who has the same pack as me, and he says it just drops in and charges. Well, obviously not. The pack is charged, but the battery refuses to charge, and every time I try it, it just doesn't do anything. I tested to see if it had charged, and-- nothing. Just blue flashing lights on the cig. I have tried every trick on the Internet, and I bought it off of a friend (he had an extra pack, he just needed a new cig charger or something) so I can't contact Blu for a new one because I don't have any information on it. HELP!