I have not had this issue yet, however, it's been my experience that when the batt starts to act up, it's past the time to have ordered a new one. I have 4 Hello 016 batts (all from MV). The first one (and the other 3) from April(?) is still working. I have learned it is best to have more units in rotation so I don't over use any one unit. Consequently, I now have 17 units to rotate
through.
I have a Hello charger that works a bit funny sometimes so I switched it out and use a fast Tornado/eGo charger instead. Also check to see if you have squashed the little bit of silicon separating the center post (pos) and the threaded (neg) area causing a short. You can carefully 'lift' the center post up a tiny bit to reestablish separation. Check this area on the charger as well. Make sure that area is clean and free of 'gunk' (fine metal particles) and centered well. Never over tighten atties. Get a multi meter to check the voltage output of the 'charged' battery and charger connection. Also I think it is possible to push the silicone button part in until it catches on the edges of the metal hole. Make sure it is not stuck 'in/on' It also sounds like
juice may have gotten into the switch area (or something somewhere is) causing a short. I hope you have backups. When
batteries short out they are pretty much goners.