One of my batteries that I haven't had very long is fizzling out on me already. I had it for a little over a month. I have 4 e-cigs and an eGo so it is certainly not from over use. If anyone is like me, I like to fiddle with my stuff. Could I have overcharged it? My manual V2 is acting up. It was one of my first purchases and the automatic battery is working just fine. Both Halos are working fine as well. I am frustrated because I like to rotate the use of them with different juices. Nothing more frustrating that one of you favorites not hitting right. I thought it should last longer than that. How long should a "cigalike" battery last? 