Your battery switch might have a short which is killing your attys. It will prob continue to happen, randomly, to all the attys you use on that battery until the battery finally dies too. Save yourself a lot of money and headache and replace your battery pronto.
I've had this happen more then once and it's a complete nightmare. I had been
vaping a year and a half when suddenly all my equipment began failing on me, one atty after another after another. No one could ever explain what was happening and just assumed either the attys were dry or they were faulty. But atty after atty? Within days, even hours of each other? I went through 10 attys in a month this way. By the time I had attys from two different suppliers going bad one after the other I knew it had to be the battery. Sure enough, within a couple weeks the battery switch on one of my eGos started sticking followed by instant death.
Attys can carry a short to a battery as well so unless you have a voltometer, do not use any attys that were on your old, faulty battery, on a new one. Throw it all out and buy new. The eGo type batteries are cheap for a reason and LR attys are prone to shorting out and taking an eGo with it.
If you use a passthrough, plug it into a surge protector plugged into a wall socket or the cigarette lighter hub in your vehicle, do not use the usb on your computer unless you're in a pinch to recharge. Replace the usb cord that came with your eGo PT with one you buy at BestBuy or equivalent. The cord that comes with the eGos is cheap Chinese bottom-of-the-line material. It can also be a source of electrical shorting.
Save yourself a lot of money and headache and just replace all of your equipment. I did and it finally corrected the problem. Just know that it happens so if you have two attys (or cartos, etc) go bad on the same battery in an unusually short period of time, suspect the battery, not the attys.
