[ltp] ThinkPad Batteries
Daniel Castro
linux-thinkpad@linux-thinkpad.org
Mon, 10 Nov 2008 19:54:03 +0000
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Right...
Two usefull links:
http://www.thinkwiki.org/wiki/Maintenance#Battery_treatment
So depending on the battery you have that's the way you treat it...
http://www.thinkwiki.org/wiki/Tp_smapi#Battery_charge_control_features
I'm going to give this a go and see...
Cheers!
2008/11/10 Adrian Bastholm <adrian@javaguru.org>
> Not long ago there was a post from a guy who advocated for never
> discharging completly, starting charging at around 20% (or 15%) but
> not less, and to stop charging unless the battery goes under 80%
> charge, with the motivation that laptop battery cells are
> force-charged when they are completely depleted, and that wears out
> the battery. Like so, charging it constantly when plugged in to AC
> wears out the battery.
>
> So both theories seem logical (to me the above seems more reasonable)
> but I'd also like an opinion from someone who doesn't just do educated
> guessing, but has some kind of engineering background in this area.
>
> Cheers,
> Adrian
>
> On Mon, Nov 10, 2008 at 6:57 PM, Daniel Castro <castromd@tcd.ie> wrote:
> > Interesting topic...
> > I got my T61 in Sept 2007, it still has the nice coloured IBM logo in t=
he
> > palm rest and display lid, so fingers crossed I'm on the safe side. Cou=
ld
> I
> > identify shitty batteries by looking at them? (brand, make, etc...)
> > So is it recommendable to use the computer without the battery on to sp=
an
> > the battery life? What I used to do is to run it without AC until
> > the battery dies, have read in several places that this improved the
> battery
> > life. I have a docking station so taking the battery out is easier for =
me
> is
> > suppose. If so, should I leave it charged or uncharged?
> > Cheers!
> >
> > 2008/11/10 Nils Faerber <nils.faerber@kernelconcepts.de>
> >>
> >> Just for the records: I can completely second this statement and
> >> experience :(
> >>
> >> The newer model's batteries are "evil" while the older (original IBM)
> >> perform way better. I have experience with X60, X61s (one failure, the
> >> others dramatically fast loosing capacity) and older models like X23,
> >> X24, X31 and T42p, all of them, even if years old, still perform
> >> reasonably well.
> >>
> >> Pity pity...
> >> If the bateries would be much cheaper I would not worry that much but
> >> with >$100 per battery this is a rather unsatisfactory experience.
> >>
> >> To save some cycles I now mostly run the devices without battery if
> >> possible - for some models a little bit "unstable" while typing but
> >> still better than ruining my batteries too quickly :(
> >>
> >> Cheers
> >> nils
> >>
> >> Lee Mathers (TCFS) schrieb:
> >> > Completely dissatisfied with Think Pad Batteries, this is mostly a
> >> > rant/vent but I do ask a question or two that perhaps someone would =
be
> >> > kind enough to anwser.
> >> >
> >> > 18 Lenovo T60 Thinkpad's 18 original batteries replaced as they
> >> > completely failed all between 10-14mth's of use. Of the 18
> Replacement
> >> > Batteries 11 of them have been RMA'd as they failed within 8mth's
> >> >
> >> > 32 Lenovo T61 Thinkpad more than 20 Original Batteries replaced and
> have
> >> > the replacement batteries have already been RMA'd.
> >> >
> >> > So to avoid me anymore IT Service Desk calls(1) I'm looking for
> >> > comment's or reviews of NON IBM Batteries.
> >> >
> >> > Just for Reference my T43 still has 92% of it's original capacity
> after
> >> > 5 years of usage. Many of the R31/R52 series also >5 year old
> batteries
> >> > still keep the system running without AC for close to an hour.
> >> >
> >> > (If you seen/know how bad these laptops operate with WinXP and a NON
> >> > Chargeabl e battery you will feel my pain, glad lenovo doesn't have =
a
> >> > battery meter for GNU/Linux.)
> >> >
> >> > Strange Lenovo would let something like a battery kill the ThinkPad
> brad
> >> > so soon after they obtained it from IBM.
> >>
> >> --
> >> kernel concepts GbR Tel: +49-271-771091-12
> >> Sieghuetter Hauptweg 48 Fax: +49-271-771091-19
> >> D-57072 Siegen Mob: +49-176-21024535
> >> http://www.kernelconcepts.de
> >> --
> >> The linux-thinkpad mailing list home page is at:
> >> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> >>
> >
> >
> >
> > --
> > ________________________
> >
> > Daniel Castro, M.Sc.
> > +353 083-318-2058
> > dancasmo@gmail.com
> > castromd@tcd.ie
> > ________________________
> >
>
>
>
> --
> V=E4nliga h=E4lsningar / Kind regards,
> Adrian Bastholm
>
> I would change the world, but they won't give me the sourcecode
>
--=20
________________________
Daniel Castro, M.Sc.
+353 083-318-2058
dancasmo@gmail.com
castromd@tcd.ie
________________________
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Right...<br><br>Two usefull links:<br><br><a href=3D"http://www.thinkwiki.o=
rg/wiki/Maintenance#Battery_treatment">http://www.thinkwiki.org/wiki/Mainte=
nance#Battery_treatment</a><br>So depending on the battery you have that=
9;s the way you treat it...<br>
<br><a href=3D"http://www.thinkwiki.org/wiki/Tp_smapi#Battery_charge_contro=
l_features">http://www.thinkwiki.org/wiki/Tp_smapi#Battery_charge_control_f=
eatures</a><br>I'm going to give this a go and see...<br><br>Cheers!<br=
>
<br><br><div class=3D"gmail_quote">2008/11/10 Adrian Bastholm <span dir=3D"=
ltr"><<a href=3D"mailto:adrian@javaguru.org">adrian@javaguru.org</a>>=
</span><br><blockquote class=3D"gmail_quote" style=3D"border-left: 1px soli=
d rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Not long ago there was a post from a guy who advocated for never<br>
discharging completly, starting charging at around 20% (or 15%) but<br>
not less, and to stop charging unless the battery goes under 80%<br>
charge, with the motivation that laptop battery cells are<br>
force-charged when they are completely depleted, and that wears out<br>
the battery. Like so, charging it constantly when plugged in to AC<br>
wears out the battery.<br>
<br>
So both theories seem logical (to me the above seems more reasonable)<br>
but I'd also like an opinion from someone who doesn't just do educa=
ted<br>
guessing, but has some kind of engineering background in this area.<br>
<br>
Cheers,<br>
Adrian<br>
<div><div></div><div class=3D"Wj3C7c"><br>
On Mon, Nov 10, 2008 at 6:57 PM, Daniel Castro <<a href=3D"mailto:castro=
md@tcd.ie">castromd@tcd.ie</a>> wrote:<br>
> Interesting topic...<br>
> I got my T61 in Sept 2007, it still has the nice coloured IBM logo in =
the<br>
> palm rest and display lid, so fingers crossed I'm on the safe side=
. Could I<br>
> identify shitty batteries by looking at them? (brand, make, etc...)<br=
>
> So is it recommendable to use the computer without the battery on to s=
pan<br>
> the battery life? What I used to do is to run it without AC until<br>
> the battery dies, have read in several places that this improved the b=
attery<br>
> life. I have a docking station so taking the battery out is easier for=
me is<br>
> suppose. If so, should I leave it charged or uncharged?<br>
> Cheers!<br>
><br>
> 2008/11/10 Nils Faerber <<a href=3D"mailto:nils.faerber@kernelconce=
pts.de">nils.faerber@kernelconcepts.de</a>><br>
>><br>
>> Just for the records: I can completely second this statement and<b=
r>
>> experience :(<br>
>><br>
>> The newer model's batteries are "evil" while the old=
er (original IBM)<br>
>> perform way better. I have experience with X60, X61s (one failure,=
the<br>
>> others dramatically fast loosing capacity) and older models like X=
23,<br>
>> X24, X31 and T42p, all of them, even if years old, still perform<b=
r>
>> reasonably well.<br>
>><br>
>> Pity pity...<br>
>> If the bateries would be much cheaper I would not worry that much =
but<br>
>> with >$100 per battery this is a rather unsatisfactory experien=
ce.<br>
>><br>
>> To save some cycles I now mostly run the devices without battery i=
f<br>
>> possible - for some models a little bit "unstable" while=
typing but<br>
>> still better than ruining my batteries too quickly :(<br>
>><br>
>> Cheers<br>
>> nils<br>
>><br>
>> Lee Mathers (TCFS) schrieb:<br>
>> > Completely dissatisfied with Think Pad Batteries, this is mos=
tly a<br>
>> > rant/vent but I do ask a question or two that perhaps someone=
would be<br>
>> > kind enough to anwser.<br>
>> ><br>
>> > 18 Lenovo T60 Thinkpad's 18 original batteries replaced a=
s they<br>
>> > completely failed all between 10-14mth's of use. Of=
the 18 Replacement<br>
>> > Batteries 11 of them have been RMA'd as they failed withi=
n 8mth's<br>
>> ><br>
>> > 32 Lenovo T61 Thinkpad more than 20 Original Batteries replac=
ed and have<br>
>> > the replacement batteries have already been RMA'd.<br>
>> ><br>
>> > So to avoid me anymore IT Service Desk calls(1) I'm looki=
ng for<br>
>> > comment's or reviews of NON IBM Batteries.<br>
>> ><br>
>> > Just for Reference my T43 still has 92% of it's original =
capacity after<br>
>> > 5 years of usage. Many of the R31/R52 series also >5 year =
old batteries<br>
>> > still keep the system running without AC for close to an hour=
.<br>
>> ><br>
>> > (If you seen/know how bad these laptops operate with WinXP an=
d a NON<br>
>> > Chargeabl e battery you will feel my pain, glad lenovo doesn&=
#39;t have a<br>
>> > battery meter for GNU/Linux.)<br>
>> ><br>
>> > Strange Lenovo would let something like a battery kill the Th=
inkPad brad<br>
>> > so soon after they obtained it from IBM.<br>
>><br>
>> --<br>
>> kernel concepts GbR Tel: +49-271-771091=
-12<br>
>> Sieghuetter Hauptweg 48 Fax: +49-271-771091-19<br>
>> D-57072 Siegen Mob: +49-=
176-21024535<br>
>> <a href=3D"http://www.kernelconcepts.de" target=3D"_blank">http://=
www.kernelconcepts.de</a><br>
>> --<br>
>> The linux-thinkpad mailing list home page is at:<br>
>> <a href=3D"http://mailman.linux-thinkpad.org/mailman/listinfo/linu=
x-thinkpad" target=3D"_blank">http://mailman.linux-thinkpad.org/mailman/lis=
tinfo/linux-thinkpad</a><br>
>><br>
><br>
><br>
><br>
> --<br>
> ________________________<br>
><br>
> Daniel Castro, M.Sc.<br>
> +353 083-318-2058<br>
> <a href=3D"mailto:dancasmo@gmail.com">dancasmo@gmail.com</a><br>
> <a href=3D"mailto:castromd@tcd.ie">castromd@tcd.ie</a><br>
> ________________________<br>
><br>
<br>
<br>
<br>
</div></div><font color=3D"#888888">--<br>
V=E4nliga h=E4lsningar / Kind regards,<br>
Adrian Bastholm<br>
<br>
I would change the world, but they won't give me the sourcecode<br>
</font></blockquote></div><br><br clear=3D"all"><br>-- <br>________________=
________<br><br>Daniel Castro, M.Sc.<br>+353 083-318-2058<br><a href=3D"mai=
lto:dancasmo@gmail.com">dancasmo@gmail.com</a><br><a href=3D"mailto:castrom=
d@tcd.ie">castromd@tcd.ie</a><br>
________________________<br>
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