Comment 6 for bug 1231550

Similar issue here, although I think the cause is different.

See attached screenshot.

1) The menu shows estimating... even though the battery is present and charged.
Furthermore, none of the other devices have useful information.

2) Note that the menu icon is for a mouse, not a battery.
If I unplug power, the indicator icon momentarily shows a full battery.
When I plug in again, it switches to a mouse icon.

3) I use 3 mice and 2 keyboards with this laptop. These are Logitech "unified" devices. I think what we're seeing is that upower reports all mice and keyboards registered with the unified receiver, even if not present.