The only similar issues I could find had to do with cold starts and once a bike got hot it would die out. I tried the fix for this, but nothing. As far as starters go they would still crank, but not turn. I get absolutely nothing except for the head light going out and the fades dash when I hit the starter. Otherwise it fires up without an issue, not a single struggle, but then won't start again after turned off. I couldn't find anything at all about that.
The battery isn't an issue. I have killed it trying to start it though, but it charges back just fine and holds the charge. My first thought was the starter, but I'm really not thinking it is the starter, it looks to be good, but if I replace something out of a pure guess, that would probably be the first thing. I have not tried cleaning it, but if I rapidly turn the bike on and off it will work. It's not till really about the 3 minute mark of running till this issue starts. I tried to use that theory to eliminate the starter, but I'm not sure how effective that is?
I'll try that this weekend. This number will not be accurate, mainly because I only used a multimeter with the bike off after doing some reading. I was hitting 13.5ish, which should have been more than capable of starting the bike and that was after multiple attempt starts without letting it hit full capacity again(hence it may have read higher on a full charge) but still won't start regardless if it had a full charge or not.
I'll try to take a video of what it is doing, it may be better than me just trying to explain it.