On Fri, 22 Dec 2000 01:52:10 -0500, "M Weiss" wrote:

>I've got a Sony TRV900 and 2 weeks ago I bought the larger 750 battery which
>claims 480 minutes. In my TRV900 of course it has a shorter run time, but my
>question pertains to why that run time estimate gets shorter and shorter
>with each charge cycle. It used to be that when it was fully charged, the
>camera would show 382 mins in the available charge window (camera off). That
>number got gradually smaller over several days and I thought it was the
>battery's microprocessor "learning" the power usage patterns of the TRV900.
>But now it's FULL at 241 mins and I am starting to wonder if there's another
>reason for the steadily decreasing time-remaining estimate. Any ideas?

Try running the battery *nearly* dead (probably best not to
run these down to zero...) before charging - you may then
see the (innacurate...;-) time-remaining indicator again
go to nearly "382 minutes". I think there is something about
this in the user's manual...