Replace battery with better quality?

[netizenmt]

I was just curious as to whether or not anyone has ever tried (or succeeded) in replacing the battery in their Chinese tablet? Would there be an improvement in battery life if you did so? Just wondering if it has been attempted.

 

[notedex]

I thought that if buys two batteries. If is using in turn. Possibly will ****** battery's life, this only will be individual suspicion.
rubattery.com