The battery on my Pre 3 seems to be dying more rapidly now that in the past. I replaced the battery but no improvement. How can I determine what is causing the battery usage? I assume one or more of the applications on my phone is running and using battery up. I don't think I have anything new. I did notice it began after I used N-drive while traveling across the country a few weeks ago with the charger connected. I assumed that I had done the regular battery in and purchased another supposedly new hp original battery, but usage is still more that previously. Your help with ideas is appreciated.