Why is the battery on my sm-t520 tablet draining so quickly (will only last 4 to 5 hours)?

[AC Question]

The battery on my sm-t520 tablet drains quickly will only last 4 to 5 hours

It indicated I have 10 hours left, but will only last 3 to 4 hours before I only have 2% left and have to charge

 

[belodion]

Re: The battery on my sm-t520 tablet drains quickly will only last 4 to 5 hours

Is this a sudden change or has it been getting gradually worse?

Posted via the Android Central App

 

[Winston Upcott]

No, if not on standby, the battery always lasts only 3 - 4hours.