Re: question about ACPI & Smart Batteries

["Cintia B. Margi" <cintia-Emgmuai4XwL2fBVCVOL8/A@public.gmane.org>]

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* Grover, Andrew (andrew.grover-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org) said:
> Unless you have a Fujitsu Uva, you do not have a smart battery, you have
> a control method battery.

I don't have a smart battery then.
 
> For a CM battery, the OS can poll the battery state by calling _BST, or
> set a trip point (via _BTP) and the OS will get an interrupt when the
> battery crosses that trip.

I do not want to set a trip point, but I would like to monitor the battery discharge
process... I want to characterize the battery discharge behavior under different tasks,
so I intend to monitor the battery voltage and the discharge rate (which I can obtain
from /proc/acpi/battery/BAT0/state). What I would like to know is how often the state
file is updated and how accurate these values are. Any idea where I can get this info?

Thanks,

Cintia 

--
Cintia Margi
Graduate Student
SoE - UCSC
http://www.soe.ucsc.edu/~cintia
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