RE: Battery "design capacity" incorrect

From: Matthew Keller [mailto:mgkeller-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] 

quoted

quoted

design capacity:         5400 mWh

So it always returns 5400 mWh, no matter what, is what I 

think you're

quoted

saying, yes?

Correct. My main question is where is ACPI "getting" the 5400 from?
Various Windows tools, and even the manufacturer's specs 
claim "3860" or
"3870" as the capacity (tools and manufacturer respectively). I've
changed various Linux tools that I've written to do the math based on
the "last full capacity", but a lot of "other people's tools" use
"design capacity" which is "better", in my opinion as it can let you
know if you're having a calibration problem.

ACPI is getting the 5400 by calling the _BIF control method, which
returns that value - i.e. from the BIOS.

I'd have to see the ASL to know whether the BIOS is dynamically
determining that, or not.

Regards -- Andy


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