[ltp] Batteries for R52

[Jaime Iniesta]

Thanks for your help!

I'll try that about fully discharging / recharging and see how it performs =
then.

I think I'll buy the 6 cells, I don't think the extra size and weight
are worth for just 50% more!

Jaime

On 10/31/06, Henrique de Moraes Holschuh <hmh@hmh.eng.br> wrote:
> On Tue, 31 Oct 2006, Jaime Iniesta wrote:
> > I need to buy a new battery for my R52. The old one is currently
> > working but has not much capacity. I can't decide which one to buy:
>
> Did you refresh it?  Charge it to full, and do a deep discharge (discharg=
e
> it until the embeded controller shuts the thinkpad off) twice in a row. T=
hen
> charge it to full again, and check its last_full_capacity reading to see =
if
> it improved.
>
> DO NOT DO THIS OFTEN.  Once or twice per battery pack *lifetime* is about
> right :-)
>
> It may give you up to 1000mAh back, if the problem is some battery
> cristalization...  but this is an extremely optimistic scenario.
>
> > The first one has 4800 mAh, is cheaper and weights 300 grams. The
> > second one has 7200 mAh, is more expensive and has a weight of 500
> > grs.
>
> It also sticks out ~1.5cm from the back of a T43, I suppose it will do th=
e
> same in a R52.
>
> > I would buy the second one if it lasts considerably more, but I don't
> > like its weight. Do you think it's worth it? Does it really last much
> > more than the first one?
>
> The 9-cell battery does indeed last 150% (i.e. 50% more) than the 6-cell
> one.   If your 6-cell used to last 2h when new, the 9-cell will last for
> about 3h when new.
>
> --
>   "One disk to rule them all, One disk to find them. One disk to bring
>   them all and in the darkness grind them. In the Land of Redmond
>   where the shadows lie." -- The Silicon Valley Tarot
>   Henrique Holschuh
>


--=20
Jaime Iniesta alias Capit=E1n planeta
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