From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Keller Subject: RE: Battery "design capacity" incorrect Date: 03 Mar 2003 14:01:41 -0500 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <1046718101.3209.60.camel@comp6161.potsdam.edu> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: "Grover, Andrew" Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Mon, 2003-03-03 at 12:16, Grover, Andrew wrote: > > From: Matthew Keller [mailto:mgkeller-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] > > Below is the output > > (/proc/acpi/batter/BAT1/info) for the battery in my Gateway > > Solo 1450X. > > The design capacity should be right around what the "last > > full capacity" > > says. I've confirmed this on Sanyo's site. I would like to note that > > everything is **perfect** with a different Sanyo model > > battery that is a > > "extra capacity" battery. Is there any source I can diddle? > > Proc entries > > I can echo some magic number into? etc? Thanks! > > > > present: yes > > design capacity: 5400 mWh > > last full capacity: 3864 mWh > > So it always returns 5400 mWh, no matter what, is what I think you're > saying, yes? > > If this isn't a problem on Windows, I think we can assume it is using > the last full capacity when generating percent full numbers. Maybe we > should do the same? > > Regards -- Andy 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. -- Matthew Keller Enterprise Systems Analyst Computing & Technology Services State University of New York @ Potsdam Potsdam, NY USA http://mattwork.potsdam.edu/ ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf