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Battery Won't Charge Beyond ~3/5

Message #1 - Posted 2006/09/10 - Nelson Lu

My PowerBook G4 (aluminum) battery, which hasn't given me trouble so far (but see below), today suddenly won't charge beyond 57%. I tried resetting PRAM and resetting PMU, but neither seemed to do anything. Is there anything else that I can/should do? Suggestions would be greatly appreciated. (In case it matters, I'm running 10.4.7.)

(Note: my battery is one of the ones being recalled, so if it's only a battery-related thing, I'd not be too worried about it, since a replacement battery is on its way, but I'm pondering if there is a non-battery related issue...)

Message #2 - Posted 2006/09/11 - Stan Horwitz

Previously, Nelson Lu wrote:

My PowerBook G4 (aluminum) battery, which hasn't given me trouble so far (but see below), today suddenly won't charge beyond 57%. I tried resetting PRAM and resetting PMU, but neither seemed to do anything. Is there anything else that I can/should do? Suggestions would be greatly appreciated. (In case it matters, I'm running 10.4.7.)

(Note: my battery is one of the ones being recalled, so if it's only a battery-related thing, I'd not be too worried about it, since a replacement battery is on its way, but I'm pondering if there is a non-battery related issue...)

More than likely, the problem will be resolved as a result of replacing that old battery with the new one that Apple is sending you. If not, you may have a bad battery charger.

Message #3 - Posted 2006/09/12 - Kevin Reid

Nelson Lu wrote:

My PowerBook G4 (aluminum) battery, which hasn't given me trouble so far (but see below), today suddenly won't charge beyond 57%. I tried resetting PRAM and resetting PMU, but neither seemed to do anything. Is there anything else that I can/should do? Suggestions would be greatly appreciated. (In case it matters, I'm running 10.4.7.)

(Note: my battery is one of the ones being recalled, so if it's only a battery-related thing, I'd not be too worried about it, since a replacement battery is on its way, but I'm pondering if there is a non-battery related issue...)

I have exactly the same problem - ~57% charge, recalled battery, 10.4.7.

(Since it started (several weeks ago) the maximum charge level has varied somewhat - 49%, 51%, etc.)

I've tried PRAM and PMU resets and two recalibration cycles.

I called AppleCare and the person claimed that it was just something that happened to batteries (which I find slightly implausible as I'd expect the software to recalibrate to the reduced maximum charge).

I haven't received my recall replacement yet.

Message #4 - Posted 2006/09/12 - Tom Harrington

Previously, Kevin Reid wrote:

Nelson Lu wrote:

My PowerBook G4 (aluminum) battery, which hasn't given me trouble so far (but see below), today suddenly won't charge beyond 57%. I tried resetting PRAM and resetting PMU, but neither seemed to do anything. Is there anything else that I can/should do? Suggestions would be greatly appreciated. (In case it matters, I'm running 10.4.7.)

(Note: my battery is one of the ones being recalled, so if it's only a battery-related thing, I'd not be too worried about it, since a replacement battery is on its way, but I'm pondering if there is a non-battery related issue...)

I have exactly the same problem - ~57% charge, recalled battery, 10.4.7.

(Since it started (several weeks ago) the maximum charge level has varied somewhat - 49%, 51%, etc.)

I've tried PRAM and PMU resets and two recalibration cycles.

I called AppleCare and the person claimed that it was just something that happened to batteries (which I find slightly implausible as I'd expect the software to recalibrate to the reduced maximum charge).

That's not right. As the batteries age, they still go between 100% charge and 0%, it's just that they do so faster.

Tom "Tom" Harrington
MondoMouse makes your mouse mightier
See http://www.atomicbird.com/mondomouse/

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