Re: Battery will no longer charge
Try a known-good charger, with a known-good cord, plugged into a known-good outlet. (IOW, if it charges your friend's Android, try it in yours.) If that doesn't work, the problem is in the phone.
If it works, replace parts (charger, cord, outlet it's plugged into) one at a time until you find the one that makes it not charge. Replace that.