PowerBook constantly alternates between charger and battery & won't charge

One my PowerBook G4 15" is no longer charging the battery. Since I have twin laptops, I checked that all batteries and chargers worked properly. The recalcitrant Powerbook recognizes that the charger is plugged in but will not start without a battery. So I swap the battery for a full one, charged with the other laptop and I can boot up. Now the computer indicates that it is running from the battery then quickly goes into power adapter mode, yet won't charge, back to battery after 2 seconds, back to adapter after another 2... on and on and on, dimming the screen up and down and draining the battery quickly. I did reset the PMU and the PRAM according to instructions read on this forum, to no avail.
Suggestions greatly appreciated. Thank you.

Welcome to the Apple discussions.
There are only 4 components in the charging circuit: Power adapter, battery, dc-in card, and logic board. It sounds like you're sure the power adapter (you did swap power adapters to confirm that?) and battery are functioning. That leaves DC-in card and logic board. It's possible that there's a dc-in card issue where it's not letting enough power through ... is the female jack on the side of the Powerbook loose? You could compare it to your working Powerbook. If not, then more likely it's a logic board issue. Take it to Apple, have them send it to the Apple repair depot, and if your case is in good shape, they'll replace the logic board for around $325, which is less than half the rate if they did the work in the store. We recently had charging problems, and sent it to the depot, and they replaced the old battery too at no additional charge.

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If it does not turn on I suggest you check this international Warranty Hotline numbers.
Country or Region
Contact
Croatia
+385 (01) 6403 868
Macedonia
00389 2 55 11 231
Belarus
+77273231427 (Standard Charges Apply)
Belgium
+32 27007377
Bosnia & Herzegovina
38733563170
Bulgaria
02 491 7915 (Standard Charges Apply)
Canada
1-877-4 Lenovo (1-877-453-6686)
China
400-810-8888 for Notebook
800-810-8888 for Desktop
Cyprus
022-030649 (Standard Charges Apply)
Czech Republic
800-555-870
Denmark
+45 89881536
Finland
+358 80094439
France
+33 243166035
Germany
01805-366-869
Greece
21-11984507 (Standard Charges Apply)
Hong Kong
(852) 3071-3561
Hungary
0680-98-7425
Israel
1809258990
Kazakhstan
+77273231427 (Standard Charges Apply)
Korea
080-513-0880 (Toll Free)
0234834817 (Standard Charges Apply)
Macau
0800 807
Malaysia
1-800-22-0116
Netherlands
0900-654-654-0
Norway
+47 81000017
Philippines
180089086389 (Domestic Toll Free)
180014410659 (International Toll Free)
(Only those purchased in Singapore
Malaysia
Thailand and Indonesia are serviceable in Philippines)
Poland
+48 22 295 49 50 (Standard Charges Apply)
Romania
0800 896 670 (Toll Free)
0372723004 (Standard Charges Apply)
Russian Federation
+7-499-705-6204
(Standard Charges Apply)
Serbia
+381-21-489-1533 (Novi Sad)
+381-11-3093-111 (Belgrade)
Singapore
18008185219
Slovakia
0850 232 406 (Standard Charges Apply)
Slovenia
0038 615202768
South Africa
0800 202 864
Spain
+34 902570921
Switzerland
0848 000960
Taiwan
0800-000-702
Thailand
0018004418711 (Toll Free)
(+662) 689-6498 (Standard Charges Apply)
Turkey
0212 7055461
Ukraine
044 362 42 81 (Standard Charges Apply)
United Kingdom
0844 2491112
United States
1 877 453 6686
Uzbekistan
+77273231427 (Standard Charges Apply)
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Elizabeth English, "G3 laptop battery won't charge up", 07:01pm Oct 27, 2005 CDT
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Hi JPL,
Thanks for getting back to me so quickly.
The machine does recognize that there is a battery(in both bays). I have tried a few battery measurement apps(x-charge and capacity meter) and they both see the battery. But they both say that the battery is not charging. Also no X in the menu bar.
It had a tiny bit of charge when I bought it. (as indicated by the lights on the side). Butt wont run the Lombard not even for a second.
I should clarify "storage" situation. I had been using the Lombard every so often but on AC only. Because the other 2 batteries had died and I assumed they just died because of the natural life that all batteries have. It is possible that the charging issue has was there before. I wasn't sure that I wanted to invest anything more into the Lombard so I had waited to buy a new battery.
It is possible that it is defective. It is an Apple M7318 battery. I had been told by a few other dealers that these batteries were no longer available and they could order in a 3rd party battery. So when I found a dealer with an Apple battery I went right down and bought it. They are a reputable dealer.
I even asked the guy a few times. Is it new? And he said yes.
Unfortunately I don't know anyone with a Lombard or Pismo any more.
One final note.
Capacity Meter "tells" me that the battery condition is very poor. And that capcity is 0/4600. I assume that means milliAmps. Does that mean the battry is dead?
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PowerBook constantly alternates between charger and battery & won't charge

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