Battery Draining quickly then charging

[yashmathur08]

Yesterday my battery was drained then I put it in charging for whole night but it did not charged at all. In morning it was saying your battery is empty recharge it soon.

I tried to figure it out through forums, what I found was heating might be problem. If the phone gets heated to a temp. it stops charging.

I kept on charging then for four hours without geting it heated by opening keypad or keeping it on chilled surface.

Finally it got charged 90% but after two hours the battery was nil again and saying me to charge it. I had not used much of data may be only for 10minutes, neither much of network calls or sms that also around 30 min.

I am using latest upgrade rom on htc's website (Sprint Touch Pro MR 2.01.651.6) PLz help me

Plz help