> How do we know what the actual current consumption is? > > Does the hardware know what current is being consumed from the battery (and > can that info be exposed in/proc or the battery applett) or is the battery > app guessing based on the battery voltage? I do think it would be interesting to see some more of the internals of the battery meter, etc. I've certainly noticed that when rebooting my N800 while it's showing 2 or 3 bars on the battery applet, it will come back up and settle at one bar. Is this because it's lost its previous state data. I.e. is past usage used to predict the amount of available time left (or is it only the current current draw and booting has skewed it)? How does this affect the bars shown on the battery meter? I'd also be interested to know how the Nokia battery performance erodes, and whether this is taken into account when predicting battery life and bars on the applet. I know the Sharp Zaurus used to leave the reported battery output (from the kernel) at 100% for an awfully long time, presumably so that users didn't wonder why their old and tired battery had dropped off 20% as soon as they unplugged it from the charger. Presumably Nokia do something similar. It would be interesting to know (and I doubt it is really such confidential information that it couldn't be obtained by someone with a decent measurement rig and an N800/770 plugged into it). Cheers, Simon
