[ltp] ThinkPad Batteries

[Henrique de Moraes Holschuh]

On Mon, 10 Nov 2008, Joerg Bruehe wrote:
> - If you are sure you don't need it, you might take it out and store it.
>   Optimum storage conditions were described as partly charged (AFAIR,
>   60% to 80%), dry, and cool (+5 to +10 °C).

Actually, 40%.  The rest is correct.

> - Avoid deep discharge (below 10% ?) and very high charge (above 90% ?).

Below 30% is good to avoid.  Keep it at 30%-80% if you don't really need
much battery uptime.  20%-95% if you need moderate.  Only go to 5%-100% if
you *really* need it.

>   Also, if using it, really discharge and don't re-charge immediately
>   (don't let it cycle from 70% to 60%, but use it down to say 30% before
>   charging again). The archive has tips how you can control the charge
>   limits from software.

The issue with constant charging is cell temperature, which rises quickly
under charge.  On cool climates, it is probably best to charge more often.

-- 
  "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