I bought the smok Alien from a well known and reputable vape shop. Everything seems to be working out well with my Alien but I have one issue. The battery percentage will always be 3% different that the other battery. Even when I charge then fully (LG 18650 3000 mah charging through the USB), on the screen will show less battery for battery B than battery A. When I have the USB in it can says 100% for both batteries on the screen but that goes back to about 3% difference once i vape. But even if I don't vape it, when I unplug the vape the screen still shows less in one battery. I'm not sure what to do. Should I get different batteries? They are less than a week old and so is my Alien. Can someone please advise me as what to do please?