Time for a New Battery?

[bobbcat]

I have had an iPhone 3GS for almost 2 years. I have noted what seems to be a pattern of shortened battery life, most recently yesterday. It was at 83% in the morning. I had maybe a 10-minute conversation on it, spent maybe 5 minutes playing Words With Friends & texted on it once. No other usage at all other than that. This morning I noted it to be at 13%. Is this a sign that it's time to have it replaced?

I am waiting for the iPhone 5 to come out before deciding whether or not to take advantage of my upgrade option to replace it either with that or just go with the iPhone 4.

 

[mamedia]

in the good old days before the iphone you normally saw a decrease of battery life time after 2 years of usage so I guess the same goes for iPhone

 

[bobbcat]

Another thing interesting that I note (particularly when listening to streaming radio in the car), the phone gets pretty hot, probably around 95 degrees (based on notion that, for the most part, a person's skin surface temp is around 87 degrees on average). I would imagine that it is not normal for the iPhone's battery to run this hot.