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Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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Why Battery won't charge?

The charger is working fine with other MacBooks. On this MacBook the charger says (green) that the battery is fully charged—no matter what the charge indicator on the battery says. Another charger also shows green all the time, but does not charge.

The same charger can charge this battery in another MacBook.

I. e. the charger is ok, and the battery is ok.

Through About this mac I can see the following:

• The charger is not recognized.

• The charger is not charging although connected.

• Remaining capacity (mAh): 0 (although the battery indicator on the battery says different).

• Battery installed: No

My guess is that the connection from the charger socket on the MacBook to the battery is broken.

When the battery is charged in another MacBook and installed, every thing works just fine.

Any suggestion / solution is very welcome.

Regards, Kurt

P. S. It will not boot without the charger connected.

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Will it boot from just the battery?

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From what you described, it appears you are correct in assuming it could be the charging socket. You may want to investigate the MagSafe DC-In Board. This little $30 part could be the culprit if the battery is actually charging, but not registering in the OS as such. More likely, though, the charging socket on the battery is malfunctioning, communicating the battery is charged, whether or not it's actually the case. It may be a sensor as well. Just a thought.

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Many thanks, Shane.

However, I think that it is more probable that it is the socket on the Mac and not the battery that is faulty, as the battery is not charged and that the Mac cannot see it. Furthermore, it is the same with two other batteries.

What puzzles me though is the fact that,

1) If the charger is not connected to the Mac, it does not respond at all when hitting the on/off button. It is as if the battery is not present (which can also be seen in the battery icon in the menu line, where an "X" is present, and it cannot calculate any remaining battery time). This is also the case with two other batteries.

2) The charger gets the impression that the battery is charged (green light). Pressing the test button on the battery reveals that nothing is happening—except that the charge is diminished when the Mac is in use. This is why I guessed that the problem could lie in a broken wire (or cold soldering) somewhere between the charge socket on the Mac and the battery socket.

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Kurt Lykke Ingesen 将永远感激不已
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