pkaplan1 at comcast.net
Sat Jan 20 21:29:46 UTC 2007
On Saturday 20 January 2007 4:23 pm, Mario Vukelic wrote:
> On Sat, 2007-01-20 at 15:49 -0500, Paul Kaplan wrote:
> > On Saturday 20 January 2007 3:30 pm, Mario Vukelic wrote:
> > > On Sat, 2007-01-20 at 15:04 -0500, Paul Kaplan wrote:
> > > > How can I tell how much charge my laptop battery has when full?
> > >
> > > On Ubuntu 6.06 (Dapper) and 6.10 (Edgy) you should be able to unplug
> > > and then see a battery icon in the notification area (I can't remember
> > > how it was in earlier versions). Hover the mouse cursor over it and it
> > > should show you the remaining time. If you don't see the battery icon
> > > then go to menu System/Preferences/Power Management and configure when
> > > the icon is shown.
> > I was looking for something more technical. I'm trying to figure out
> > whether the battery is loosing it's ability to hold a charge or whether
> > it's just discharging very rapidly.
> I see :) Poke around in /proc/acpi/battery/*, using cat on the cmd line.
> I don't know what exactly to do with the info there, but it might give
> you hints. E.g., on my laptop:
> cat /proc/acpi/battery/C1B1/info
> present: yes
> design capacity: 4659 mAh
> last full capacity: 4659 mAh
> battery technology: rechargeable
> design voltage: 10800 mV
> design capacity warning: 233 mAh
> design capacity low: 47 mAh
> capacity granularity 1: 100 mAh
> capacity granularity 2: 100 mAh
> model number: Primary
> serial number: 00719 2006/09/04
> battery type: LIon
> OEM info: Hewlett-Packard
> cat /proc/acpi/battery/C1B1/state
> present: yes
> capacity state: ok
> charging state: charged
> present rate: 0 mA
> remaining capacity: 4496 mAh
> present voltage: 12257 mV
As I suspected...
design capacity: 47520 mWh
last full capacity: 14910 mWh
Will cycling the battery from full to discharge 2-3 times restore the ability
to charge to design capacity? Is there anything else I might try or am i
destined for a replacement?
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