Replace Stock Battery With Better one

Hello.

The battery capacity of z3 compact is not so good, compared to these days phones, of course it was good back then when released.

I'm wondering if it's possible that I can replace the battery with another (more capacity) one? Maybe from another phone… is it possible?

If the dimensions fit and I could make it to connect to the board, will it work as expected a without harming the board?

What may happen?