My iPod touch 5 won't charge properly
This is a recent issue as of the past week. I've had my 32 GB iPod touch 5 for almost three years. Suddenly, it won't charge fully or sometimes at all. When I plug it in, the lightning bolt icon appears next to the battery but it continues to drop and give me "Low Battery" notifications. I've tried changing the cord, plugging it into different power sources, cleaning the plug on the iPod, resetting it using the lock and home buttons, and putting it in airplane mode to charge. It says battery charging but it isn't. It will even shut off while it is supposedly charging. I'll leave it for several hours and come back and it says fully charged for a split second, then drops again very rapidly. It'll go from around 80% to less than 20% in literally seconds, even right after I take it off of the charger. Sometimes it will even stop charging while it is still plugged in, meaning that the lightning bolt symbol goes away and it doesn't even tell me it's charging.
I'm pretty frustrated because I use my iPod for a lot of school work since I don't have a laptop or smartphone, and now I can't even use it for class because it won't last for more than maybe half an hour of use.
Any help would be greatly appreciated 🙂 Thanks!
iPod touch (5th generation), iOS 9.1, 32 GB, three years old