enabling lowbattery.ogg

[AC Question]

I've got a droid razr m using android 4.4.2 (kitkat). I want to install an audible low battery alert. I selected a sound from windows ( a .wav file) and converted it to .ogg and uploaded it to the phone's notifications directory. Would this be enough, or would I need an app for it?

Help appreciated.

Thanks.

 

[zaraxam]

I wanted to add: the phone doesn't seem to have an audible notification sound for low battery. I would like it to have an audible sound that goes off every 10 minutes or so, when it reaches around 40% battery.