2.3GHz, 2.6GHz, or 2.7GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

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MacBook Pro Not strarting after Battery replacement


I just swapped a old battery for a new one, no problem changing the battery. (Mid2012 model)

But after i got it all together and trying to turn on the machine, nothing happens.

No display, fans, chimes, all dead.

The charger is green for the first 3-4 seconds when connect, and goes orange after this.

I measure battery with voltmeter and its it showing 10v.

I tried resetting SMC and PRAM.

(When i reset SMC i see light on charger goes green, and back to orange again)

I have testet with 2 brand new batteries, and the old one, still dead.

Does anyone have any tips/clue here?

Thank you!

Answered! View the answer I have this problem too

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The charger is doing what it's supposed to. Let it charge up for a few hours and wait till the mag-safe light turns green, then give it a try.

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Thanks for reply, charger has now been connected for about 8 hours now. Still not green.

When i disconnect battery, light on charger is still acting same as when battery is plugged in.

I testet this battery in another MacBook, and its working great.


On the other Mac, download , install and run, then report your finding on the new battery using Coconut Battery. http://www.coconut-flavour.com/coconutba...


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Fredrik will be eternally grateful.
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