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Modell von 2011, A1278 / 2,3 GHz i5 oder 2,7 GHz i7 Prozessor

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Early 2011 MBPro's new battery not charging

Hello everyone,

[TLDR: new battery, new MagSafe board, SMC and PRAM reset but battery not charging]

A few months ago, my venerable MacBook Pro's battery finally gave up. Its capacity had been decreasing but it suddenly dropped to 0, meaning that if I disconnected the cable, the system would immediately shut down. However, I was still able to use it with the MagSafe connected.

However, a few weeks ago, the MacBook began to shut down randomly, even after less than one minute of activity, without any load. I read somewhere that the MacBook pro is not supposed to run only on the MagSafe so I decided to replace the battery.

First I went to a Apple Store because I trust Apple regarding batteries. However, this model is not maintained anymore. So I investigated and found out that Newertech batteries are supposedly good. I bought one, installed it, the MacBook started and did not shutdown randomly the few moments I used it. So I proceeded to the so called battery calibration, the first step being to shutdown the MacBook, and charged it completely. However, I realized that it was not charging rather quickly. What happens: I connect the MagSafe, its light turns green, the battery indicator lights up with 2 dots and a third one blinking. However, a few seconds later, when the battery indicator shuts down, if I push the button, only the 2 dots will appear, not the third blinking one. I tried resetting the SMC and the PRAM but it did not help.

Newertech service told me to try another MagSafe, so I went back to an Apple store and over there the lights did not even turn on. I was unlucky because back at home it worked again. Anyway, I asked the vendor if it could be the MagSafe board and he answered that it could be that or a lot of other things on the motherboard as well. Since I just had bought a 100€ new battery, I thought I would give a try to a 20€ new MagSafe board and then eventually give up.

I just replaced the MagSafe board, reset the SMC and PRAM but the battery is still not charging.

So would you have any idea of the origin of my problem? Thank you!

By the way, I run Linux Mint on it, if it can help the diagnosis.

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Make sure all the battery pins are connected and not dusty,

and all the wires are on the connector.

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Jean-Baptiste wird auf ewig dankbar sein.
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