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Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

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How can I fix the battery icon and battery?

I had a start up screen with the planet earth blinking

On it. Right after that my battery had an X over the icon

And the charger is very dim green

Does anyone have a solution?

Answered! View the answer I have this problem too

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Is the X black or red?

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Chosen Solution

From Mac Support article

Resolution

1. Shut down, then remove and reinstall the battery. Test for the issue(s) again.

2. Connect the MagSafe power adapter (if you haven't already) and see if the behavior continues.

3. If the issue(s) persist, download and install the Mac OS X v10.4.9 Update.

4. If the issue(s) persist, download and install Battery Update 1.3.

If, after installing the Mac OS X v10.4.9 Update and Battery Update 1.3, a black "X" still appears in the menu bar, follow the steps in MacBook, MacBook Pro, MacBook Air: Battery not recognized after being fully drained.

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