Hi Sindhu,
hmmm... This is pretty strange. Discharging batteries to increase life? Not
a very good idea. A Lithium-ion battery's efficiency drops to less than 80
percent after about 300 discharge cycles and turns very unreliable after
about 500 discharge cycles. One discharge cycle is one complete discharge
and recharge.
Your experience with your older laptop must have been due to(I'm just
guessing here) a faulty "auto charging turn off feature"(i dunno what else
to call this). Most electronic devices which use rechargeable batteries have
this in them. The power supply to the battery is automatically turned off as
soon as it is fully charged. Therefore, there is no need to make any effort
to extend battery life other than keep it plugged in at all times.
I don't like to use my laptop unplugged because I know that every time I'm
discharging the battery it's efficiency is coming down.
Here's something I'm pasting straight from Wikipedia:
*"Lithium-ion batteries should not be frequently fully discharged and
recharged ("deep-cycled"), but this may be necessary after about every
30threcharge to recalibrate any electronic charge monitor (e.g. a
battery
meter). This allows the monitoring electronics to more accurately estimate
battery charge.*"
Keep it plugged in. :)
-Rajath S.
On Sun, Apr 19, 2009 at 9:59 PM, Sindhu S <[email protected]> wrote:
>
> Hi all!
>
> I own a Asus EEE 1000H (160GB HDD) and am very particular about the
> battery discharge, I unplug from AC power as soon as it charged 100%
> as from my previous experience with my Compaq laptop I learnt that
> keeping any netbook/laptop plugged in on AC power all the time causes
> battery life to deplete rapidly.
>
> This summer I have quite some time on hand and i figured maybe I could
> device a way in which I can prevent this battery drain.
>
> So I was thinking as soon as my "program" reads that ACPI is reporting
> battery status as 100% charged, I lock the screen, forcing the user
> (me) to unplug the AC cord and unless the power cord is unplugged the
> screen won't be unlocked.
>
> Low battery status is notified properly for me by "power
> management" (am on Gnome on Jaunty Beta) but full status of the
> battery is sometimes notified or sometimes I miss it as a result of
> being away from the netbook.
>
> I don't know how to get started, am confused as I don't know how the
> internals of ACPI work...like would it be right to assume that acpi
> sends out a notification when battery has been charged 100%? so that I
> can make use of this notification and lock the screen ?
>
> Can I write my "program" as a shell script?
>
> I don't have any experience programming under Gnome, so can you guys
> please help out with suggestions/ideas?
>
> Thank you! :)
> >
>
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