Why is my iPhone 4S stuck on a 1% battery charge, despite being charged for 30 hours?
I have had my iPhone 4S for barely ten months. In the past, I have had small problems that would either fix themselves or just stop occurring, such as freezing issues. But recently my phone was drained to a 1% and after realizing this I quickly plugged it into a car charger. About 15 minutes later, I noticed it had switched to an 100% battery charge. I blew it off and the next time I glanced at my phone it was back to 1%, so I turned it off thinking it would reset it and I would leave it to charge. I came back to the phone maybe 30 minutes later to power it up and it displayed the red sliver of battery with a lightning bolt underneath it. It stayed like this for a good while and eventually came on. Since then it has been stuck on this 1% battery charge. One last thing I noticed was that the bolt inside of the battery on the top right hand corner sometimes shows a plug, saying its fully charged. I'd rather not turn it off because I'm not sure it will come back on. What do you guys suggest I do?
iPhone 4, iOS 6.1.1