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Poll: How much battery drainage in shutdown/hibernation

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  Poll: How much battery drainage in shutdown/hibernation BeadyBeady Bee <beadybeadybee@gmail.com> - 2011-04-28 15:34 -0700
    Re: Poll: How much battery drainage in shutdown/hibernation mike <spamme9@gmail.com> - 2011-04-28 16:02 -0700
      Re: Poll: How much battery drainage in shutdown/hibernation BeadyBeady Bee <beadybeadybee@gmail.com> - 2011-04-28 18:28 -0700
        Re: Poll: How much battery drainage in shutdown/hibernation BeadyBeady Bee <beadybeadybee@gmail.com> - 2011-04-29 05:12 -0700

#173 — Poll: How much battery drainage in shutdown/hibernation

After months of testing, I finally submitted my laptop for
troubleshooting.  A new laptop with a 100% charged battery discharges
5+ percent/day.  A graph of my test data indicates that it will
roughly discharge the battery in 17-20 days.  This is in hibernation
(whereas it's just over 4% in shutdown).  The vendor's position is
that this is normal because things like the clock require power.  All
I know is that my previous laptops were not nearly that voracious in
hibernation and shutdown.  The discharge was so unnoticable that I
never bothered to test them.  My bad, as I have no baseline figures
(and this isn't even normally spec'd)

I was hoping to do the wisdom-of-crowds thing and get people's
anecdote with their laptops (when new).  How long have you found that
it takes for a laptop in shutdown or hibernation to completely
discharge a 100% charged battery?  Most people probably never tested
this before, but perhaps you can give a gut-feel for the ball park
percentage discharge per day in hibernation or shutdown.

Thanks.

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#174

BeadyBeady Bee wrote:
> After months of testing, I finally submitted my laptop for
> troubleshooting.  A new laptop with a 100% charged battery discharges
> 5+ percent/day.  A graph of my test data indicates that it will
> roughly discharge the battery in 17-20 days.  This is in hibernation
> (whereas it's just over 4% in shutdown).  The vendor's position is
> that this is normal because things like the clock require power.  All
> I know is that my previous laptops were not nearly that voracious in
> hibernation and shutdown.  The discharge was so unnoticable that I
> never bothered to test them.  My bad, as I have no baseline figures
> (and this isn't even normally spec'd)
> 
> I was hoping to do the wisdom-of-crowds thing and get people's
> anecdote with their laptops (when new).  How long have you found that
> it takes for a laptop in shutdown or hibernation to completely
> discharge a 100% charged battery?  Most people probably never tested
> this before, but perhaps you can give a gut-feel for the ball park
> percentage discharge per day in hibernation or shutdown.
> 
> Thanks.
as you give zero input on the make/model of the laptop or the battery
technology involved, it's gonna be really hard to help you.
I can tell you that it VARIES between models.
Your problem seems to be shutdown, cause hibernate don't add much.

You might want to look into BIOS options.
Some things like wake on lan, if enabled might draw power in shutdown.

If I'm not gonna use a laptop in 20 days, I take out the battery.

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#176

On Apr 28, 7:02 pm, mike <spam...@gmail.com> wrote:
> BeadyBeady Bee wrote:
> > After months of testing, I finally submitted my laptop for
> > troubleshooting.  A new laptop with a 100% charged battery discharges
> > 5+ percent/day.  A graph of my test data indicates that it will
> > roughly discharge the battery in 17-20 days.  This is in hibernation
> > (whereas it's just over 4% in shutdown).  The vendor's position is
> > that this is normal because things like the clock require power.  All
> > I know is that my previous laptops were not nearly that voracious in
> > hibernation and shutdown.  The discharge was so unnoticable that I
> > never bothered to test them.  My bad, as I have no baseline figures
> > (and this isn't even normally spec'd)
>
> > I was hoping to do the wisdom-of-crowds thing and get people's
> > anecdote with their laptops (when new).  How long have you found that
> > it takes for a laptop in shutdown or hibernation to completely
> > discharge a 100% charged battery?  Most people probably never tested
> > this before, but perhaps you can give a gut-feel for the ball park
> > percentage discharge per day in hibernation or shutdown.
>
> > Thanks.
>
> as you give zero input on the make/model of the laptop or the battery
> technology involved, it's gonna be really hard to help you.
> I can tell you that it VARIES between models.
> Your problem seems to be shutdown, cause hibernate don't add much.
>
> You might want to look into BIOS options.
> Some things like wake on lan, if enabled might draw power in shutdown.
>
> If I'm not gonna use a laptop in 20 days, I take out the battery.

It's a Toshiba Satellite A660.  But I'm also interested in anecdotes
from other models so that I can get an idea of the spread.

I disabled Wakeup-On-LAN and Sleep&charge (complete story at
http://groups.google.com/group/comp.sys.laptops/browse_frm/thread/16762961230f369f).

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#177

On Apr 28, 9:28 pm, BeadyBeady Bee <beadybeady...@gmail.com> wrote:
> On Apr 28, 7:02 pm, mike <spam...@gmail.com> wrote:
>
>
>
>
>
>
>
>
>
> > BeadyBeady Bee wrote:
> > > After months of testing, I finally submitted my laptop for
> > > troubleshooting.  A new laptop with a 100% charged battery discharges
> > > 5+ percent/day.  A graph of my test data indicates that it will
> > > roughly discharge the battery in 17-20 days.  This is in hibernation
> > > (whereas it's just over 4% in shutdown).  The vendor's position is
> > > that this is normal because things like the clock require power.  All
> > > I know is that my previous laptops were not nearly that voracious in
> > > hibernation and shutdown.  The discharge was so unnoticable that I
> > > never bothered to test them.  My bad, as I have no baseline figures
> > > (and this isn't even normally spec'd)
>
> > > I was hoping to do the wisdom-of-crowds thing and get people's
> > > anecdote with their laptops (when new).  How long have you found that
> > > it takes for a laptop in shutdown or hibernation to completely
> > > discharge a 100% charged battery?  Most people probably never tested
> > > this before, but perhaps you can give a gut-feel for the ball park
> > > percentage discharge per day in hibernation or shutdown.
>
> > > Thanks.
>
> > as you give zero input on the make/model of the laptop or the battery
> > technology involved, it's gonna be really hard to help you.
> > I can tell you that it VARIES between models.
> > Your problem seems to be shutdown, cause hibernate don't add much.
>
> > You might want to look into BIOS options.
> > Some things like wake on lan, if enabled might draw power in shutdown.
>
> > If I'm not gonna use a laptop in 20 days, I take out the battery.
>
> It's a Toshiba Satellite A660.  But I'm also interested in anecdotes
> from other models so that I can get an idea of the spread.
>
> I disabled Wakeup-On-LAN and Sleep&charge (complete story athttp://groups.google.com/group/comp.sys.laptops/browse_frm/thread/167...).

I should add that the problem is not the battery, since there is no
noticable discharge when the battery is removed from the laptop.  So
this is a poll of the discharge caused by power draw from the laptop
in hibernation and/or shutdown, with Wakeup-on-LAN and USB
sleep&charge deactivated.  Thanks.

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