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Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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MacBook Pro Stops Charging on High Load

Hi,

Since a few days, when my MacBook Pro is connected to the MagSafe power source and I Log On … Open an app that demands more resources like virtual machine, iPhone simulator in Xcode, etc., The computer stops charging (MagSafe LED goes off) and I have to disconnect from power, wait at least 15-20 seconds and connect it again in order to start charging again.

The battery has 724 cycles and Coconut Battery says is in good condition.

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Hope someone can help.

Regards.

Update (10/25/2018)

Hi Dan,

This images are before and after stops charging on high load.

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Regards.

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Lets look at this from a different direction. What do you have for RAM & storage?

More RAM (max 16 GB) and going with a SSD will improve power usage over low RAM and using a HDD.

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I have 16 GB of RAM and SSD for a few years, never had that problem.

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Lets check the MagSafe charger and its connection to your system. Refer to this Apple T/N Apple Portables: Troubleshooting MagSafe adapters focus on the cable and connector condition. Often times the connector faces are dirty, use a cotton swab (Q-Tip) with some isopropyl alcohol to clean them.

The next time your MagSafe LED goes out quickly open CoconutBattery and take a fresh snapshot.

Update (10/25/2018)

At this point I’m thinking the DC-In Board plastic insulator is warping as the current load is warming it up. Here’s the IFIXIT guide: MacBook Pro 15" Unibody Late 2011 MagSafe DC-In Board Replacement and here’s the needed part: MacBook Pro Unibody 13" and 15" MagSafe DC-In Board

MacBook Pro Unibody 13" and 15" MagSafe DC-In Board图片

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MacBook Pro Unibody 13" and 15" MagSafe DC-In Board

$9.99

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Hi Dan,

I cleaned the connector with isopropyl alcohol, checked the cable and is in good condition, but the problem persists.

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