I notice that my P5's battery percentage will read 100% for the first 4-5 hours, then suddenly drops of something like 92%, and then keeps dropping normally as it should for the rest of the day, and drops a bit faster in the evening (no usage behavior changes). Not that I'm complaining, It's still at 60-ish % after a long day of use, but it seems to "stick" at 100% for a long time before it wakes up and reads more what I'd expect it to. Anyone else noticed this?