Why does my battery life drain so quickly

[AC Question]

If I charge my phone and turn it off and then back on my battery percentage is really low

 

[Javier P]

What phone do you have? Can you easily replace the battery for a new one?

 

[B. Diddy]

Welcome to Android Central! I agree with Javier P's implication that the battery is probably failing. Replace it if possible.

 

[domdo]

Replace the battery, it may be dangerous to use a damaged battery