On Aug 12, 2005, at 12:23 PM, Bob Axtell wrote:

> The ideal batterycharge guage is the scheme devised for "smart 
> batteries",
> It maintains a history about the battery, and therefore is able to 
> determine
> PRECISELY the charge level, battery quality, battery lifetime.
>
I've never had much luck with "smart batteries."  The theory is nice, 
but
I always seem to end up with systems that say there's 15 minutes left
right up to the point where they say "no battery."  This is based on
mostly on sony info-lithium cells in a camcorder of some significant
vintage; have things improved significantly?  (Alas, when the meter is
accurate, one tends not to notice very much...)

BillW
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