Two points
If your Stator was going to blow, that would have been the time. A totally dead battery is one hell of a stress on the system. The older and more deteriorated its condition, the more it looks like a short. (more current draw) So everyone is right here. if it's more than a couple of years old, invest in another. L/A batteries never recover fully once they have been totally drained BTW, although that doesn't necessarily mean it's NFG.
A higher capacity O/P most likely would not have changed your outcome if the RPM was not high enough to begin with.