Originally Posted by
Joshu42 If you change your behaviour, like enable Airplane mode by night, the estimated time left is screwed. You have to re-calibrate your battery.
You can't recalibrate the battery. You can only reset the software estimations and it's not needed, nor recommended. The number of hours left in Device Monitor mean nothing, just estimation based on average voltage drop in time. You can have average estimated 8h left and still kill the battery in 2h using GPS navigation, for example. Resetting Device Monitor data is a waste of time. Z10's battery is good for about 4.5h screen-on time doing something with about 50% CPU load, less for more intensive tasks, 12-15h usage as normal communication device. That's it. No "recalibration" magic will improve that.