TECHNOLLIC, It has been about 9-10 hours since i unplugged my phone from the charger, and its still at 60%. I have made about 5 calls, updated my weather and send/recieve my email, in the email tab, about 2 times. Also watched youtube for about 5 min and watched a .avi movie for about 5 min. Thats about it, also note that I have applied the registry tweak for the battery refresh time to 20000 decimal. If you have a problem you can always change the signal to work only in 1x, that will give you almoust 2 days of battery life, from my experience, and about a full day in Rev.0.