I've checked the forums, and although many have similar problems I am having the main one at the moment I haven't seen anything about.

Ok, so just over a week ago my phone fell into some water, it was submerged for 2 seconds at the most but killed the phone seconds after anyway. I pulled it apart as much as I could to dry it and a few days later got it working again for a while via reflasing until the battery died for good.
I just got a new battery online and since I have gotten it my phone has died within half an hour after a full charge each time. It displays a full battery icon the whole time until after a while it suddenly goes to zero and my phone dies again.
Other than that the phone works perfectly. If anyone can help it would be much appreciated.