[ltp] Problems with (non-Lenovo) battery

[Dave Cunningham]

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I bought a non-lenovo battery for my W700DS and found that it could not
supply enough power -- The machine can be used on battery as long as you
don't try and do any intense graphical work that uses the GPU.  If you do
that, it will power off immediately.

Intensive CPU + hard disk + wifi is OK, however.  It is just the GPU as far
as I can tell.

Also the cheap battery lost the top 15% of its capacity within the first
month.

i still use the cheap battery on transatlantic flights but I have to
structure my work so I can do a few contiguous hours of non-graphical work.
It is quite irritating.  I have 2 lenovo batteries that are fine, however.



On Sun, Dec 12, 2010 at 9:27 AM, Arno Trautmann <Arno.Trautmann@gmx.de>wrot=
e:

> Hi all!
>
> I'm using an X61s with Arch Linux.
>
> Two questions, short one first:
> The wifi-light of my machine keeps blinking. The connection is ok and
> stable, but it blinks with about 2Hz frequency. This is quite annoying
> when I try to concentrate. Any idea to prevent it from blinking?
>
> Long question:
> Some time ago my original battery (8-cell) lost its capacitance and I
> needed a new one. As they are quite expensive, I bought one
> non-original. (also 8-cell) That one works fine, except for longer times
> on battery:
>
> /proc/acpi/battery/BAT0/state
> present:                 yes
> capacity state:          ok
> charging state:          charged
> present rate:            0 mW
> remaining capacity:      62290 mWh
> present voltage:         15765 mV
>
> This file may show a remaining capacity of, say , 40000mWh, but suddenly
> the machine just turns off. When connected to power supply again, I get
> capacitance close to the value before, so the power is not just "lost"
> anyhow.
> However, I guess it might be that the voltage drops below some critical
> value (is below 15V then) that might be slightly higher on original
> batteries. Is that possible? If so, is there a way to prevent the
> machine from shutting down by decreasing this value slightly?
>
> I=92m happy for any suggestions,
> cheers
> Arno
>
>

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I bought a non-lenovo battery for my W700DS and found that it could not sup=
ply enough power -- The machine can be used on battery as long as you don&#=
39;t try and do any intense graphical work that uses the GPU.=A0 If you do =
that, it will power off immediately.<br>
<br>Intensive CPU + hard disk + wifi is OK, however.=A0 It is just the GPU =
as far as I can tell.<br><br>Also the cheap battery lost the top 15% of its=
 capacity within the first month.<br><br>i still use the cheap battery on t=
ransatlantic flights but I have to structure my work so I can do a few cont=
iguous hours of non-graphical work.=A0 It is quite irritating.=A0 I have 2 =
lenovo batteries that are fine, however.<br>
<br><br><br><div class=3D"gmail_quote">On Sun, Dec 12, 2010 at 9:27 AM, Arn=
o Trautmann <span dir=3D"ltr">&lt;<a href=3D"mailto:Arno.Trautmann@gmx.de">=
Arno.Trautmann@gmx.de</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_q=
uote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 2=
04, 204); padding-left: 1ex;">
Hi all!<br>
<br>
I&#39;m using an X61s with Arch Linux.<br>
<br>
Two questions, short one first:<br>
The wifi-light of my machine keeps blinking. The connection is ok and<br>
stable, but it blinks with about 2Hz frequency. This is quite annoying<br>
when I try to concentrate. Any idea to prevent it from blinking?<br>
<br>
Long question:<br>
Some time ago my original battery (8-cell) lost its capacitance and I<br>
needed a new one. As they are quite expensive, I bought one<br>
non-original. (also 8-cell) That one works fine, except for longer times<br=
>
on battery:<br>
<br>
/proc/acpi/battery/BAT0/state<br>
present: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 yes<br>
capacity state: =A0 =A0 =A0 =A0 =A0ok<br>
charging state: =A0 =A0 =A0 =A0 =A0charged<br>
present rate: =A0 =A0 =A0 =A0 =A0 =A00 mW<br>
remaining capacity: =A0 =A0 =A062290 mWh<br>
present voltage: =A0 =A0 =A0 =A0 15765 mV<br>
<br>
This file may show a remaining capacity of, say , 40000mWh, but suddenly<br=
>
the machine just turns off. When connected to power supply again, I get<br>
capacitance close to the value before, so the power is not just &quot;lost&=
quot;<br>
anyhow.<br>
However, I guess it might be that the voltage drops below some critical<br>
value (is below 15V then) that might be slightly higher on original<br>
batteries. Is that possible? If so, is there a way to prevent the<br>
machine from shutting down by decreasing this value slightly?<br>
<br>
I=92m happy for any suggestions,<br>
cheers<br>
<font color=3D"#888888">Arno<br>
<br>
</font></blockquote></div><br>

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