If you’re really wondering how long the huge battery on the Epix will last you, then you may want to check out Chris Leckness’ experience over at Mobility Site. According to Chris, the device keeps going and going–for four days actually!

In a far from scientific test of the AT&T Epix, I was about to go 4 days without a charge. I charged up last Thursday night. Last night, Monday November 3rd, I charged again and the indication was that I had 20% battery left.

During the weekend, the phone was checking email (Exchange Push) and a couple short phone calls. Friday and Monday, the Epix got moderate use. Email checking constantly, an average of 1 hour of talk time, and about an hour of internet time.