The positive post is surrounded with some kind on rubbery thing i think, so im not sure how i could fix it, im adding a picture
I have a Sony VTC5 in there, so the battery shouldnt be the problem.
Some backround information about the device : I got it around a month ago, at first it worked fine with no problems, then a few weeks back it said shorted when i screw the atomizer on top of it, the only way for it to work was when i unscrewed it a bit but then the atomizer was wobbly but atleast it worked. But now all it does is say "shorted"

, i took the back cover off, and all the soldering seemed OK to me, i was thinking that the problem might be the 510 connector but i have so little expericene so i cant be sure.. if you have any ides/tips or anything please HELP ME !!!
Sorry if my english is broken.
