I think I'm in this boat right now. I actually had my DNA 200 board go bad on me, so I sent it to Evolv and they replaced it. Got the mod back, working, but the battery wont charge any more than 9.05 watt hours and the cells are out of balance by anywhere from .04v to .07v. I had at first thought that Evolv put one of their reference batteries in it, so I opened it up and it was printed Fullymax 1200mah. It was a super tight fit, too. The cell seemed bigger in the middle. Not sure if it was bulging or if that's the way it is. I'm now worried it might not even be safe to use, even at the lower capacity. Anyone know of any replacement batteries would fit in this? Maybe it's time to sell it to someone as "good board, good enclosure, good 510, iffy battery".