510 can this be??

[tankerman]

Hey yall
I have a qt
I got a 510 and I notice that one of the batts I get a lot of vap smoke and the other I do not. Is the batt week I charged it for 8 and 3 hours and still the same.
Thanks

 

[aspen]

be sure to wipe off threads where they connect, this can cause poor performance.