Is there such a thing as a battery-killing powerbook?

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ian - 23 Oct 2004 17:24 GMT

I bought a used Pizmo.

Battery promptly failed--would only run maybe 20 minutes. Seller gave
me another, used but tested. It did the same. But strangely, when both
batteries were in the laptop, it reliably ran around 7 hours!

Bought a new battery. Worked well for a month or two -- now it shows
as even deader. No LEDs light, computer goes into "running on reserve
power" the instant it's unplugged from wall. Strange part: instead of
going to sleep within a short time, it keeps that msg displayed,
awake, for at least two hours.

I've reset the PMU, allowed powerbook to run until it finally did go
to sleep, recharged for hours. No change at all. Any idea what's going
on?

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Laurent Daudelin - 26 Oct 2004 11:01 GMT

> I bought a used Pizmo.
>
[quoted text clipped - 11 lines]
> to sleep, recharged for hours. No change at all. Any idea what's going
> on?

Since you tried 3 different batteries, it sounds like the PMU is defective...

-Laurent.

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ian - 27 Oct 2004 03:54 GMT

> > I bought a used Pizmo.
> >
[quoted text clipped - 15 lines]
>
> -Laurent.

Further experiments, and equally strange results. Took the battery,
and twice more let powerbook run overnight, until it was *thoroughly*
asleep, then recharged.

Battery now looks perfectly OK, runs for hours. I suppose I oughta try
it with the other batteries and see if everything springs back to
life.

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Mac Forum / General / Portable Macs / October 2004

Is there such a thing as a battery-killing powerbook?