Comment 35 for bug 539912

papukaija: No, different bug. That bug is fixed in Unity. Menus in Unity have the ability to dynamically update, which is a significant improvement over the old static menus. I can confirm that I only see 'Laptop battery (estimating...)' for 1 or 2 seconds after the power cable is unplugged.

I would like charge percentage brought back in addition to estimated time.

It would also be nice to have an option to show power there, so I can conserve more battery charge.