[Q] My battery seems to recharge in about fifteen minutes. That's not with the
machine running, and not from absolutely zero (as in "left on over the
weekend"), but it is from 0 marks to 5 on the battery check icon. Which brings
up some questions:

Is my battery recharging too fast? Are NiMH cells damaged by rapid recharging?
How much do those battery check marks mean, anyway? Mine seems to go
"5554444444444444442222222222222111000". I don't think I've ever seen three
marks displayed. I assume they represent a voltage measurement. Is there a way
to get higher resolution indications, or technical data on the existing one?
How much computing should I expect after I see zero marks?