What's going on with my battery?

[onnad]

So lately my battery life hasn't been good. I'll use like 15% during the day but during the night it will drop like 15-20% sitting on my desk.The wifi strength is like 3/5 bars. I close apps, location/bluetooth is off, no battery hogging apps like facebook. I don't spend a lot of time on my phone or watch videos. Any suggestions?

 

[Golfdriver97]

The battery may be starting to show it's age. Any way you can try a new one?

 

[onnad]

Is it hard to replace the battery?

 

[Golfdriver97]

I'm pretty sure the back is removable. Replacing the battery should be pretty easy

 

[onnad]

Would turning off wifi at night help? . If I do turn it off will it affect my affect my data?