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Model Number A1707. Released June 2017, this MacBook Pro features Kaby Lake processors up to the 2.8 GHz quad-core Intel Core i7 processor with Turbo Boost up to 3.8 GHz.

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Replaced MacBook battery, dies immediately after unplugging from power

I replaced my macbook battery because it was dying immediately after unplugging. I used it for awhile with the power cable duct taped to the laptop. Yesterday I finally got around to replacing the battery and it’s doing the exact same thing - dying immediately after unplugging.

Is there anything that can be done before buying another battery and testing my luck again?

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When you replaced the battery, did you remember to supply a new battery daughter board cable? These are necessary for the machine to recognize the battery. You can see what the cable looks like in Step 10 of this guide MacBook Pro 15" Touch Bar 2017 Battery Replacement

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Thanks for your reply! on my first attempt at repair I actually broke the clamp/hinge to the cable that you referred to in step 10. my second attempt yesterday I hot glued the daughter board cable in place. Sounds like you figured it out! I'll look into what a repair of that hinge might require.

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Sounds good, please keep us posted and let us know if you resolve the issue!

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I would recommend you check your ports. I suspect one of the connections is not working properly try using the other side. Using a USB-C power meter like Satechi USB-C Power Meter should help isolate which is a bad port or if the systems charging logic is really the issue.

How about installed this gem of an App CoconutBattery and take a snapshot of the apps main window as well as the battery info tab and post it here for us to see Adding images to an existing question

That way we can be sure you have a battery issue Vs something else.

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Was the problem solved? I have the same problem on my 2017 13" MBP, but I did well connect the battery cable (even buy another one to replace), trying again and again reset SMC, NVRAM, but it doesn't work. Looks like something wrong on the logic board...

The coconut battery snapshot as below, with charger or without charger.

Block Image
Block Image

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@ivanwang - Did you follow the answer I provided?

Get a USB-C power meter to see if the system is accepting power. Let us know what you discover.

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Yes, I see a normal situation on charging, 20.22-20.23V, 1.5-2.xxA (about 30 W) when charging battery, when 0.7-1A(about 7-15W) when battery is not charging (100%). So I believe the battery is ok, but system board can’t switch battery / AC power normally.

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@ivanwang - OK the system is getting power, so does the system turn on with USB-C power Vs Battery alone?

Download CoconutBattery (link above) and install it and take a snapshot of the Apps main window posting it here. Go into edit mode for your post above and click on the tool icon far right picture icon upload and then click on it to post the link ID in your update post.

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@danj thanks, I’ve uploaded the coconut battery snapshot, sometimes it boot without charger but suddenly shutdown without any signal.

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