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95% battery is maximum

Message #1 - Posted 2004/04/06 - Jeremy Fieldsend

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

Thanks
Jeremy
(PowerBook G4, 10.2.8)

Jeremy
jeremyatcommunityhypenrelationsdotcoetc

Message #2 - Posted 2004/04/06 - Jim

Previously, Jeremy Fieldsend wrote:

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

You may need to re-calibrate the battery. Charge as full as it will go, unplug, then keep using until it falls asleep through lack of power. Charge again until full and it should hit 100%.

Jim

jim@magrathea.plus.com -*- GreyArea@mac.com "We deal in the moral equivalent of black holes, where the normal laws of right and wrong break down; beyond those metaphysical event horizons there exist ... special circumstances" - Use Of Weapons

Message #3 - Posted 2004/04/06 - David Glover

"Jeremy Fieldsend" <jeremy@yahoo.com> wrote in message news:1gbtivz.1loz9jh1qkezoyN%jeremy@yahoo.com...

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

Your battery may need calibrating. The instructions for this are in the welcome guide, but yes, I've lost mine too...

Simply unplug your PowerBook and use it until the battery runs out. It must completely run out, ie, wait until it actually shuts itself off. Ignore the "low battery" warnings.

Then, plug it in, and charge it. You should find the meter now goes to 100%.

Message #4 - Posted 2004/04/06 - Jeremy Fieldsend

David Glover wrote:

"Jeremy Fieldsend" <jeremy@yahoo.com> wrote in message news:1gbtivz.1loz9jh1qkezoyN%jeremy@yahoo.com...

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

Your battery may need calibrating. The instructions for this are in the welcome guide, but yes, I've lost mine too...

Simply unplug your PowerBook and use it until the battery runs out. It must completely run out, ie, wait until it actually shuts itself off. Ignore the "low battery" warnings.

Then, plug it in, and charge it. You should find the meter now goes to 100%.

Ta

Jeremy
jeremyatcommunityhypenrelationsdotcoetc

Message #5 - Posted 2004/04/06 - Jeremy Fieldsend

Jim wrote:

Previously, Jeremy Fieldsend wrote:

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

You may need to re-calibrate the battery. Charge as full as it will go, unplug, then keep using until it falls asleep through lack of power. Charge again until full and it should hit 100%.

Jim

Ta

Jeremy
jeremyatcommunityhypenrelationsdotcoetc

Message #6 - Posted 2004/04/07 - Jeremy Fieldsend

zoara wrote:

http://docs.info.apple.com/article.html?artnum=88344

Indeed. Curiously, having run the battery down completely and then recharged as suggested, it did in fact reach 100% but now, 24 hours on, it seems stuck at 94% again. Normal it is then.

Jeremy
jeremyatcommunityhypenrelationsdotcoetc

Message #7 - Posted 2004/04/07 - Phil Taylor

Previously, zoara wrote:

Jeremy Fieldsend wrote:

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

Despite what others have said, this appears to be normal behaviour...

http://docs.info.apple.com/article.html?artnum=88344

Which says:
"When the battery level eventually drops below 95 percent, it will charge all the way to 100 percent."

Which is what others have said. That reference does however imply "don't worry about it - it's normal".

Phil Taylor

Message #8 - Posted 2004/04/07 - zoara

Jeremy Fieldsend wrote:

I've downloaded and installed (well, Software Update has) Battery Update 1.1/. Thing is, the battery now only charges up to 95%. Not really a problem as such, but the additional 5% would be nice.

Any ideas what's going on here and how I can get my last 5%?

Despite what others have said, this appears to be normal behaviour...

http://docs.info.apple.com/article.html?artnum=88344

-z-

"I didn't expect the voice of karma to be called Bob." -- Giles, uk.comp.sys.mac

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