My battery is confused.

[pdq]

My son's Ti PB (667 Mhz) got a new battery a couple years back. It's got decent life (about 90 min of operation) but even when freshly recharged, the battery icon indicator shows very low % charge.

I downloaded CoconutBattery, and found an explanation (I think). It says that although the original battery capacity was 4000 mAh, the battery capacity now is 63486 mAh! (Woohoo!)

So, when it recharges to around 3000 mAh, this TiPB thinks that's only 5% of the total capacity. (The battery seems to think so too, in that with a full charge, it still shows only one LED).

At Apple, Battery Reset seems to be for older Mac laptops. Battery Update seems to be for pre-10.4 systems (and this is running 10.4). I found some suggestions to reset PRAM or reset the PMU, but I'm a little hesitant to mess with things since the battery seems to work okay, it just doesn't know how much power it has left. (As one side effect, as the battery runs out, the Powerbook just goes black, without the usual warning).

Any suggestions?

[Tofer]

Resetting the PMU is an easy evolution, and might just do the trick. I'd start there. Otherwise, you might want to run the battery all the way down (until the powerbook goes to sleep), and that may also fix it.

-Tofer

[space-time]

fully charge the battery, then let it plugged in for two more hours.

Run the battery down, until computer shuts down by itself (ignore any warnings just keep using the laptop). Make sure you saved all the work though. Or better, just watch a DVD, this will suck power faster.

Let it in this state for 5 hours, (after the battery is completely dead).

Then plug in and restart. Hopefully this will fix it.

EDIT: found the original document:

http://docs.info.apple.com/article.html?artnum=86284

[pdq]

Thanks!

I'll try it.

[RAMd®d]

I would *not* run the battery until it's *completely* dead. I doubt the link tells you to do that.

There is a risk that you will not be able to charge it at all, and you'll not have even the 90min you've been getting.