[ltp] poll: how is your battery? (9-cell-battery lost about 25% capacity in 10 months)

[David Tansey]

i have 4 days before i have purchased my laptop (purchased it online).
does the warranty for the battery allow you to return it if it has
lost a certain about of capacity within the warranty period?

i know that was true for other laptop's i've owned (not ibm.)=20

i'd love to get a free replacement if i could.

thanks
-david

On 7/11/05, David Tansey <djtansey@gmail.com> wrote:
> figured it out.
>=20
> /proc/acpi/battery/BAT0/info has it
>=20
> it says design capacity: 61920
> last full capacity: 40630.
>=20
> i'm only at 75% battery though. i assume that doesn't matter.
>=20
> which is too bad. it's sad that it's lost 1/3 of its capacity since i
> got it ~1 year ago.
>=20
> On 7/11/05, David Tansey <djtansey@gmail.com> wrote:
> > that'd be nice if i had windows... any way to do it in linux?
> >
> > -david
> >
> > On 7/11/05, Kelvin KAN <kelvin@sgi.com> wrote:
> > > We don't "test" the battery capacities.  They are reported by (Window=
s)
> > > Thinkpad Config - Battery Maximizer Wizard.
> > >
> > >
> > > David Tansey wrote:
> > >
> > > >how do you test this? i'd like to know what my x40's 8-cell holds.
> > > >
> > > >On 7/11/05, Kelvin KAN <kelvin@sgi.com> wrote:
> > > >
> > > >>My T42, bought 2005/1, now 30 charging cycles:
> > > >>
> > > >>design capacity:         47520 mWh
> > > >>last full capacity:      45000 mWh
> > > >>
> > > >>i.e. loss of more than 5% in 7 months, even when I have been always
> > > >>taking out the battery in office/home environments.
> > > >>
> > > >>Yes, compared with my previous TP600E, I think T42 is much worse.
> > > >>
> > > >>
> > > >>-
> > > >>kelvin.
> > > >>
> > > >>
> > > >>honey@gneek.com wrote:
> > > >>
> > > >>
> > > >>>On Mon, 11 Jul 2005, Fionn Behrens wrote:
> > > >>>
> > > >>>
> > > >>>>What would you say, is a loss of 25%-30% in 10 months really acce=
ptable
> > > >>>>for a quality battery? What are your own experiences?
> > > >>>>
> > > >>>
> > > >>>I'd tend to agree - my IBM battery experience is certainly worse t=
han
> > > >>>my Dell experience (just about everything else has been better).  =
My
> > > >>>6-cell T40 battery is I guess about 15 months old:
> > > >>>
> > > >>>design capacity:         47520 mWh
> > > >>>last full capacity:      18450 mWh
> > > >>>
> > > >>>Lasts about 30 minutes or less now.  I don't see that there's much
> > > >>>you can do except write off IBM as using a poor-quality battery
> > > >>>supplier?  And cost replacements into the running cost of IBM lapt=
ops.
> > > >>>I incidentally never bother taking my battery out - the heat from =
my
> > > >>>CPU/motherboard never seems to reach the battery when I feel for i=
t,
> > > >>>and it always feels quite cool.  Taking it out would seem to me to
> > > >>>really unbalance the laptop.
> > > >>>
> > > >>>Must test my 9-cell battery soon.
> > > >>>
> > > >>>Honey
> > > >>>
> > > >>--
> > > >>The linux-thinkpad mailing list home page is at:
> > > >>http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> > > >>
> > > >>
> > > --
> > > The linux-thinkpad mailing list home page is at:
> > > http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> > >
> >
>