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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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Why isn’t my replacement battery charging?

After replacing my battery my laptop does not power on without an external power adapter. The status icon indicates a battery level of 1 percent and no charging. I’ve tried coconut battery and the results are strange, it says my battery has one cycle count and manufactured in 2016; charging current is zero. The power shuts off immediately if I disconnect the power adapter.

I have attempted the following.

  • SMC reset
  • Leaving the computer plugged in powered off overnight with the adapter.
  • Connecting an external power brick to the powered off computer (screen periodically flashes with red charging indicator).
  • Checking the data cable connection (verified cable is fully seated with a continuity tester).

Measuring the voltage on the connections labeled +/- I found about 2.2V which is comparable to the voltage on the original fully drained battery (2.18V).

Are there any other things I can try to troubleshoot or get the new battery to work?

I stripped a screw so the new non-working battery is stuck in the laptop for now..

Edit: 26 Dec 2021 Coconut Battery Screenshot (Replacement Battery)

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Edit: 27 Dec 2021 Coconut Battery Screenshot (Original Battery for Comparison)

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Answered! View the answer I have this problem too

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Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question

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@danj Okay - I have edited the post with a CoconutBattery screenshot.

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Not good ;-{

The charging logic within the logic board is having problems and this battery is shot!

It appears this battery has been on the shelf a very long time! As it has a 2016 date could this is your original battery not the replacement?

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So. That is the strange thing here. This is the new battery I got but the serial number and date look way too old. I have not put my old battery back in yet to compare. I have tried SMC reset but don’t think I have been successful since the new battery has no juice at all.

I do notice that the temperature updates, so I think there is some communications with the battery management controller. I’ll try to put the original battery in this week to see if there is a difference. The original battery was working before the swap but with diminished life.

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@danj I just reinstalled my original battery and it is charging. It looks like the replacement was a dud and strangely is older than my original battery. :/ I will take this issue up with ifixit support for a replacement. Thanks.

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@astrotam - Two bad batteries! Where are you located? As you need to find a better source for a replacement battery and return the replacement as its clearly bad from the start!

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Tam Do will be eternally grateful.
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