Can i replace my weak battery with another one with better life span?

[StavrosWTF]

I am having trouble with my phone's battery. It discharges fast and i would like to know if there is a way to find a compatible battery (that is stronger than my phone's one) to put on my android phone. This is it: http://www.gsmarena.com/gigabyte_gsmart_akta_a4-reviews-6832.php

 

[TechyInAZ]

Does the phone's battery come out? I know there are lots of phones that have a built in battery.

 

[StavrosWTF]

Does the phone's battery come out? I know there are lots of phones that have a built in battery.

yes it does