Battery Doesn't Calibrate After Replacement

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MacBook Pro 13" Retina Display Late 2012

2.5 GHz dual-core Intel Core i5 processor (Turbo Boost up to 3.1 GHz) with 3 MB shared L3 cache.

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Javier Romero @ajangles

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Posted: Jan 7, 2019

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Battery Doesn't Calibrate After Replacement

As in the title, this doesn’t seem to work, according to coconutBattery the full charge capacity is 4752mAh, and the design capacity is @ 72% of 6600mAh. BUT it lasts for hours from 7% charge, goes down pretty quickly before that however.

I’ve tried:

Charge until full, then 2hrs more, then completely deplete and leave for at least 5hrs in sleep mode. Then recharge to full - which I left charging for over 12hrs. No change
After this I reset the SMC and tried the same procedure, still no change in it.

Any possible solutions ? Could be a faulty SMC perhaps ? I did see some sticky gunk inside when changing the battery, looks like something was probably spilt on it at some point..

*Edit* coconutBattery Screenshots:

Answer this question I have this problem too

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2 Comments

Can you post the CoconutBattery main window with the MagSafe connected and again with it disconnected Adding images to an existing question

Jan 7, 2019 by Dan

Added, thanks

Jan 7, 2019 by Javier Romero

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Can you post the CoconutBattery main window with the MagSafe connected and again with it disconnected Adding images to an existing question — Dan

Dan @danj Rep: 479.1k Self employed contract worker 35 329 971 · Answer 1 · 2019-01-07T15:25:16-07:00

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Dan @danj

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Posted: Jan 7, 2019

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Not good ;-{ Your charging logic has a problem on the main logic board or the DC-In board.

If you look at your captures you’ll see the ‘Charging with’ line is showing charging when the MagSafe adapter is disconnected! For reference here’s my MacBook Pro’s: