I just purchased my Athena VapeSnap with a Herakles tank. Worked well for the first few days. I left for a training exercise and I had no way to charge it and with all the moving around I was afraid to get it damaged. I left it for 5 days with a full battery .Now when I try to use it, "VOLT LOW" comes on the screen. I tried to charge it and the little battery shows 2 diagonal lines through it and blinking. It isn't charging. My friend took my battery and put it into his mod. Works perfectly fine and says it is at 100%. It also make a hissing or buzzing noise when I try to charge it. Sorry if I am all over the place, just got done rucking back, pretty tired. Thanks!