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2011년 10월 24일 출시 / 2.2, 2.4, 또는 2.5 GHz 쿼드-코어 Intel Core i7 프로세서

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MacBook Pro Charging Slow

I have a late 2011 MBP that takes 16 hours to charge fully from 0%. Anyone have any idea what could cause this?

Things I've checked:

New power adapter

Cleaned out charging port

Battery appears to be in great shape only having ~40 cycles and holding factory capacity

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Original Apple charger or generic replacement?

Over on Apple Discussions there's a group who have had the transformers in the charger go bad or overheat…(you're not alone)

What country are you in, are you using a surge protector or UPS? (low voltage is as damaging to computer electronics as surge voltage… only a UPS protects against voltage drops).

How you treat the charger (batteries) and cords can cause failure… Contact Apple and see what they say.

If this answer is acceptable please remember to return and mark it.

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Machead,

It's an original replacement I bought from BestBuy. I'm in the US and have tried it both directly on a wall outlet and with a surge protector, but not a UPS. I've never had any other of electronics have any issues with power surges in this house. Apple refuses to help because I don't have a warranty left.

Here's a guide and a though this is the DIY recycle place you have to ask yourself… ~25$? for a functioning replacement?

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