MacBook Pro shuts down seconds after full charge on a new battery

Hello everyone, I installed a replacement iFixit battery for my MBP 17” mid-2010 and after following the guidelines for calibration the laptop shuts down a few seconds after I unplug the MagSafe 85W.

I then reset the SMC while unplugged but the computer shuts down in the middle of the boot progression bar. As if it didn’t have enough juice to go boot it, although the side leds are fully green.

As soon as I plug the MagSafe it boots.

Then I reset the PRAM, yet the issues are the same.

The first day I let it charge 100% + 2 hours min. , then I let it charge overnight for +8 hours thinking it may need more charging time but the problem remains.

The other battery I’m using is a Dynapack model and despite being old and having significantly less autonomy it works without any of these issues above, the machine goes to sleep mode when the battery nears full drain and can resume my session normally. It holds 1300+ cycles, which is only why I’m looking to replace it.

This is the second battery iFixit sent me and I’m currently in communication with them (shout out to Athina for reactivity), in the meantime I wonder if there’s anything I could do or hear from people that had similar issues that can help me.

I’m providing the coconut battery screenshots after unwanted shutdowns at different charging times (+2 hours and + 8 hours consecutively)

Thanks a lot for your help.

K.

• Update 01 - Fri 31st, 15:20

Following @danj ‘s advice I let the machine shutdown by itself to get new coconut screenshots.

The MBP shut down at 90%, just like the 1st iFixit battery I received and shipped back, here’s the pre-failure screenshot :

Here’s the post failure at 90% :

And after another reboot because I couldn’t get the time and internet back :

If there’s any weird here, please let me know.

• Update 02 - Mon 3rd 21:01

This time I unplugged the battery and held the power button for +1 min in order to drain the system, plugged it back and did an SMC reset.

The battery was at 91%, I logged in and the laptop shutdown a minute later. Here are the screenshots pre and post failure :

I still can’t see what’s going on, over the weekend I was using the Dynapack battery for work and didn’t get any issues. Ifixit is offering another replacement, I may do it if there’s no other troubleshooting option I can try.

• Update 03 - Wed 5th 09:21

Overnight and to my suprise I managed to drain the battery entirely by setting the computer and battery sleep to “never” in the Energy Saver preferences. Under normal use it would shutdown between 87 and 90%, so I’m glad to see a change here and hope that fully draining the battery will help calibrate it properly. Here’s a coconut screenshot the morning after the full drain :

• Update 04 - Wed 5th 16:11

After the full charge, the laptop shutdown when unplugging the MagSafe, here’s a post crash coconut screenshot :

I’ll do an SMC reset and if it fails again I’ll reach out to support for a second replacement battery, I hope it’ll be the right one.

• Update 05 - Wed 5th 16:19

After resetting the SMC, the battery now keeps showing the “poor” condition, screenshot below:

I’ll contact support. Thanks again @Danj for your help.

• Update 6 - Wed 5th 21:47

After unplugging the MagSafe, the battery is currently working “normally”, it’s at 58% and the battery status shows “good” with 4 cycle counts, I ran video and a DAW without crashes so far. I keep this journal updated for eventual feedback.

• Update 7 - Thu 6th 15:40

Yesterday evening the battery went all the way down to zero and even saved the session after plugging the MagSafe this morning, despite my optimism and progress the laptop shut down after unplugging the charger once reaching 100%.

Hopefully the next battery will work…

Charge in progress after full drain :

Full charge before crash:

And battery status after crash :

• Update - Fri 7th 11:53

Back to the Dynapack Battery, showing consistent data below and waiting for the replacement battery.

• Update - Mon July 4th 2022

Still unsolved on my end after 2 iFixit replacement batteries and gave up when the second battery I sent back reached iFixit's warehouse the 2nd of March 2020.