I have to send back both of my eGo batteries as the "button battery" is just recessed too much. I am having to pry them up everytime I switch out a carto. This has quickly became a pain in the hiney not to mention this is going to end up messing the battery up. Don't know how many times I can pry on it before the seal breaks. So, this leaves me no way of vaping. I am sure with the holidays it is going to take a couple of weeks by the time they get the batteries back and send out the new ones. So, I figure my options are (basied on 10 days) I can spend $80 dollars on disposable blu's (7.99 each) or break down and by a carton of cigs for $38 dollars. This just sucks. I am on a limited income and have spent way too much money on vaping over the last month (however, did find my sweet spot set up). 
