I am using the Motorola BP7X extended battery with my DG2. I also use Battery monitor widget app. It shows in 1% increments. I drained the battery until phone shut off then fully charged until the widget showed 100%. Keep in mind the phone will show fully charged at 100% however the battery monitor shows its at 95%. So I keep the phone plugged in the outlet until the battery widgets shows its 100%. Then I reset the battery stats in recovery. My battery goes all the way down to 1% and then powers off a few minutes later. So I'm sure the phone is showing the correct battery.