Battery drained immediately

[AC Question]

I have noticed lately that my phone is dying very quickly. I charged it all night and this morning it was at 100% ,as soon as i unplugged the charger it immediately went down to 14%. I see nothing in my phone that would make it do this. I have viewed everything i can think of and do not understand why. I just upgraded this phone 6 months ago,it's a samsung galaxy s3.

 

[belodion]

The battery may need replacing.