On the Inspire, the battery use indicator also includes a time since last unplugged. (Menu -> Settings -> About Phone -> Battery -> Battery Use) There's also an included widget that goes straight to it. The time since unplugged is a good way to gauge how your current apps/config is working out and affecting your battery life. I had noticed that this number was way off a number of times, reading into the days, when clearly that was not the case. After messing around i figured out the reason. Every time you UNPLUG the phone, the counter starts running. That's the key. If your phone dies, and then you charge it to full, and then unplug it, the Inspire doesn't even know it was plugged in. The simple solution is this: Always make sure your phone is ON before you unplugit from the charger/PC. Then your time since unplugged will always be accurate.