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List:       acpi4linux
Subject:    Re: [ACPI] Problem with the battery state
From:       Matthew Garrett <mjg59 () srcf ! ucam ! org>
Date:       2005-05-26 23:14:02
Message-ID: 1117149242.29662.84.camel () tyrosine
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On Thu, 2005-05-26 at 11:21 -0500, Vasileios Gkanis wrote:

> I am using ACPI (kernel 2.6.12-rc4) to monitor the status of my battery and 
> what I have observed is that the remaining capacity is decreasing!
> A couple of days ago "cat /proc/acpi/battery/BAT1/state" would show that the 
> remaining capacity was 4800mAh, and today it shows 4485mAh.

Batteries self-discharge over time. In order to reduce the number of
charge cycles, laptops will typically not recharge them until they've
dropped below a certain threshold capacity (older Sonys don't do this,
and so eat batteries). It's likely that this is entirely normal.

-- 
Matthew Garrett | mjg59@srcf.ucam.org



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