So here's a new bug that showed up the other day.

My iPhone 3G doesn't show signs of battery depletion at all.
We would all love a battery that lasts forever, but I dont want the phone to randomly die on me.

What happens is that the meter stays at 100% (checked with MyBattery.app to make sure). As much as I use the phone, abuse it as much as possible, it keeps a 100% charge.

Then I notice this and performed a reset (home/lock button), when the phone starts back up it shows the correct level (lets use 50% as an example).

From here though, that 50% gets stuck and doesn't deplete until i reset the phone once again, then it shows the correct level.

Is there a way to delete some power/battery cache or plist of any sort?

Or does anyone have a solution to this problem?

Even setting the numerical battery from extended preferences keeps the level solid, no depletion at all.

Restore the iPhone in DFU mode and see whats happen after that. I think this should be your solution.

Restoring is the option that I'm trying to avoid all together, even though I know it would work.

Originally Posted by SilentEcho13

Restoring is the option that I'm trying to avoid all together, even though I know it would work.

I am afraid You'll have to, sorry.

I had the same issue. Performed a hard reset, ran the battery down and charged overnight, restored, but no avail.

I let the iPod run all night, so in the morning I had over 9hr of usage time with no dent on the battery meter. Took it to Apple and explained to the genius what all the troubleshooting steps I performed; my unit was swapped out without question. Hardware failure.