Don't most people have at least one more controller? I always have my second controller charged and ready to go. Besides I find swapping controllers every time I play extends their life significantly, which I do for both my 360 and ps3 controllers.
Also I'm still running an original sixaxis and one of the first DS3 controller both work fine besides the analogues which feel looser.
I do this too.
After a few months an extra controller is clearly a better deal than AAs.