John J. McDonough 05:17 2004-10-18:
>A couple of key quotes from IBM's "Tips for Maximizing Your Battery Life=
"
>
>3. Recondition your battery by letting your battery run to less than 3% =
at
>least once a month. Reconditioning the battery can restore some of your
>battery capacity.

That is only valid for NiCd and possibly NiMH (seen varying notes from su=
ppliers on this)

Li cell manufacturers have explanined to me that cell life is longer the =
less the voltage varies.  No memory effect of any kind exist with Li, so =
not possible to regenerate some loss or wear.  Tha tis for the cell chemi=
stry.  aside from th echemistry (i=B4m just fantasissing there) there mig=
ht be problem of the charging system not taking care of leveling the volt=
age on several series connected cells, and in that case they may by time =
drift apart so if only using shallow cycles soe cells wil be low charged,=
 while other are ful charged, and the charge system only handles tha ton =
a a full dischareg/charge cycle.  But that is not because of the Li chemi=
stry, but non-optmal charge/serveillance cirquitry.

>5. Do not place your battery or your ThinkPad in a high temperature
>environment, such as a car on a hot day.

Common for all electrochemical systems

>7. When you store your battery outside of your ThinkPad Computer, store =
it
>with a charge of less than 50% to reduce the battery wear.

Weird, IMHO the oinly effect i can think of is that would increase the pr=
obability of cells getting fully discharged, shoud you forget it for some=
 months.

/Morgan
--
Morgan Olsson, Kivik, Sweden


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