So recently I have had 3 batteries go bad on me within a week. I can put it in my mod, and hit it 1-50 times and be good. Every time this happens, the button gets extremely hot and so does the battery. Anyone have any ideas what this is about?
Authentic Tahiti Mod
0.2 ohm build (22 GA)
Sony VTC5's
When your button is getting hot it's either because you are drawing too much current for it, or the switch parts are dirty and need to be cleaned.
When your batteries get hot it's because you are drawing too much current from them. There have been counterfeit VTC5s sold lately that are not 30 amp batteries.
Check this out
and this for some info on how to recognize fakes.
Now, your first paragraph leads me to think you might mean there is no heat for 1-50 hits and then suddenly on one hit the button and battery heat up real quick. If that's the case you have a intermittent short somewhere. It could be the coil making contact with the inside of the cap, the atty 510 post making contact with the deck, the 510 post in the mod making contact with the negative surface, you get the idea. Also, your battery should be in the mod with the positive end on the 510 post and make sure your battery wrapper is not torn.
All you can do in this case is work through all the possible problem areas with a DMM looking for continuity where there should not be any. Intermittent problems can be really hard to troubleshoot and you'll just have to be patient and go though everything slow and methodical.
Good luck with it!