The battery's gone wonky on my tablet. It takes a 3000 mah.
If I was able to get a battery, like maybe, a 6000 mah, would
it charge correctly, or would I need to go back with the same
type battery?

There is plenty of room for a larger size battery, longer, wider,
and even thicker. It would be easy enough to measure, I just
forgot to when I had the case open.

Is there a web site where I could get a new battery?
--
:-)
Don't let the Zombies get you!!!!