Help Problem with my Samsung Galaxy Attain battery.

[Samsung Galaxy4g]

So I was just playing my Galaxy attain and my battery level was 93% then I open a app and it says the battery is low.
Why?

 

[Rukbat]

Not sufficient information. It could be something as simple as the app is wrong. What app, is it running anyway, is the battery actually low after the app starts running?

 

[Samsung Galaxy4g]

Not sufficient information. It could be something as simple as the app is wrong. What app, is it running anyway, is the battery actually low after the app starts running?

It's any gaming app like Despicable Me rush, Real Basketball, Unblock me free.
And the phone turns off like it's dead but when I plug it in to charge it shows the battery is charged and that it's still working