Comment 24 for bug 1093543

testing a kernel with teh above patch doesnt seem to fix it either ... but i made an intresting observation:

right after first boot
ogra@nexus7:~$ upower -d |grep energy-full:
    energy-full: 73.66 Wh

the "energy-full" value actually should be a fixed value coming from the battery describing the upper charge level...

after a reboot:

ogra@nexus7:~$ upower -d |grep energy-full:
    energy-full: 69.42 Wh

and indeed the battery applet (with "show time" set in the options) immediately show 100% charge at boot (even though thats nonsense indeed)

so i think our base value used to compute the time in upower is reported wrongly (or read wrongly by upower)