S3 Takes 5 days to charge, runs out in 5 minutes, what is happening to me :(

A

AC Question

Okay so I've had this S3 for a couple years now, it was working fine for a long time until it started taking a while to charge, after it got really bad I decided to change the battery.

Problem solved (at least that's what I thought) it's been a few months and it's really bad now, i've had it on charge from 11:00pm last night until 6:00 pm today and it was only charged 23%..... now it's just about to run out of battery because I used snapchat and a few other things for no more than 5minutes.

Why is this happening? The number of times I've reset this phone is uncountable and I can't think of anything to do other than to throw it in the bin and go buy a new galaxy.