The conversation on this page has been archived and is no longer active.

12" G4 Battery won't charge

Message #1 - Posted 2007/05/18 - Steven Fisher

Battery is obviously detected, but won't charge. Two different power adapters. The ring will briefly turn orange sometimes, but always goes green within a minute or so. I've tried resetting the power manager. Any other ideas? Any way to isolate the PowerBook vs. the battery short of buying another battery (or, worse, another PowerBook)?

Message #2 - Posted 2007/05/18 - John Johnson

Previously, Steven Fisher wrote:

Battery is obviously detected, but won't charge. Two different power adapters. The ring will briefly turn orange sometimes, but always goes green within a minute or so. I've tried resetting the power manager. Any other ideas? Any way to isolate the PowerBook vs. the battery short of buying another battery (or, worse, another PowerBook)?

How old's the battery, and how often do you discharge it (estimate full discharges, partial discharges sum to a full discharge linearly; that is, 3x1/3 discharges = 1 full discharge)?

Later,
John

johajohn@indianahoosiers.edu

'indiana' is a 'nolnn' and 'hoosier' is a 'solkk'. Indiana doesn't solkk.

Message #3 - Posted 2007/05/18 - nospam

Previously, Steven Fisher wrote:

Battery is obviously detected, but won't charge. Two different power adapters. The ring will briefly turn orange sometimes, but always goes green within a minute or so. I've tried resetting the power manager. Any other ideas? Any way to isolate the PowerBook vs. the battery short of buying another battery (or, worse, another PowerBook)?

that sounds like the battery is no good.

try that battery in a different powerbook as well as a new battery in your powerbook.

Message #4 - Posted 2007/05/19 - Steven Fisher

Previously, John Johnson wrote:

How old's the battery, and how often do you discharge it (estimate full discharges, partial discharges sum to a full discharge linearly; that is, 3x1/3 discharges = 1 full discharge)?

Battery has 40% of original capacity, which is obviously terrible... cycled 209 times according to coconutBattery. I'm pretty sure the battery is garbage, I'm just surprised it can't recharge at all.

Maybe I should let it discharge a little and then try to recharge it. The percentage it's stuck at right now may be a maximum, rather than just what it was when the charging stopped working.

Message #5 - Posted 2007/05/19 - Steven Fisher

Previously, Steven Fisher wrote:

Maybe I should let it discharge a little and then try to recharge it. The percentage it's stuck at right now may be a maximum, rather than just what it was when the charging stopped working.

It looks like this is the ticket. I can discharge it to 33%, then stick the AC back in. It'll charge to 35% and then stop charging again.

Message #6 - Posted 2007/05/18 - nospam

Previously, Steven Fisher wrote:

Previously, Steven Fisher wrote:

Maybe I should let it discharge a little and then try to recharge it. The percentage it's stuck at right now may be a maximum, rather than just what it was when the charging stopped working.

It looks like this is the ticket. I can discharge it to 33%, then stick the AC back in. It'll charge to 35% and then stop charging again.

that sounds like one (or more) of the internal cells has failed, preventing it from fully charging. another symptom of a failed cell is the computer suddenly shuts off despite the battery having a reasonable amount of charge left.

Message #7 - Posted 2007/05/19 - Steven Fisher

Previously, nospam wrote:

that sounds like one (or more) of the internal cells has failed, preventing it from fully charging. another symptom of a failed cell is the computer suddenly shuts off despite the battery having a reasonable amount of charge left.

Had that happen a few weeks ago but didn't think much of it. Good. If it just the battery I'm completely happy.

Need Help? Have a Question?

Looking for more help, comments, and answers?

Ask your questions on Ask Different. Ask Different is a community of Apple users ready to help.