I have been playing around with two applications that have widgets to show estimated battery life left: Battery Left Widget Battery Left Widget for Android - Tools JuicePlotter JuicePlotter for Android - Tools At one point, they seemed to show times that were pretty close but after updating to 2.1 they were off a bit. I am guessing 2.1 might have changed (hopefully improved) battery life and that caused calibration issues. I am just looking for any feedback from the community about which of these two apps they prefer, or if there are others I should look into. Of course, two of my main concerns are 1) I don't want an app that drains the battery and 2) accuracy is important. Thanks for any feedback!