Hi guys. My girlfriend and me just got Ego C Twists 650maH and Pro tank 2 minis on friday to quit smoking analogs. It has been working out well and am loving the different flavors and we are both doing good on not smoking analogs. We both smoked about a pack a day before but it seems like her battery is lasting about 2 days before she is charging it which seems to be the normal battery life according to the B&M store we bought it at but I am going through my battery in a day before it is dying and it needs recharged. Already had to take my first battery back because it wasn't holding a proper charge and just wondering if it is possible that our different smoking habits is what is causing me to go through a battery a day. Yesterday she used about a tank of juice where as I used about 1 1/2 tanks. But my battery was fully charged in morning and died after about 12 hours after being unplugged but hers was on 2nd day of not being charged and was still going after mine had died. Thanks for the help and sorry about the wall of text.