I've not noticed any change. My job does not allow personal phones, so I leave mine in the car. At the end of each work day I still have about 90% power. The last few days have been no exception. As a side note, when I first got my Droid, the battery life seem rather poor. I tried this fix, and for me at least, it seemed to work. I let the phone drain till it shut itself off. Recharged the battery to 100%. Since that time the battery life has improved.