It is actually long but not difficult. And I think the time is worth it to prevent potential damage during battery removal.

I just finished the process. The battery is in the calibration phase.

Thanks for this very clear and detailed tutorial! Everything went smoothly except for an incident with the microphone ZIF connector locking flap during reassembly (step 42, I left a comment with a link to instructions for the fix).

I see many questions about the reason for removing the logic board. In my opinion:

- This takes a little time, but this is not the most difficult part as it is only about screws and connectors.
- This is a reasonable time investment to protect the logic board from any accident that could happen during the battery removal process.
- This is a good opportunity to clean the computer from all the accumulated dust (It is incredible how much was in the cooling fans, my CPU will be thankful).

Thanks again.

During reassembly, when trying to lock the ZIF connector flap, the flap jumped out of the connector.

If this happens to you and you are lucky, as I was, maybe it is not broken. It is possible to fix it, but you will need dexterity and patience as this is a very tiny part.

I had to go and get my watchmaker eyeglass to actually see what was going on.

I also found this iFixit tutorial. Here is the link so you don't have to look for it:
Repositionnement du clapet de connecteur de nappe flexible

Just replaced my 2018 15" MBP battery. Running Sonoma.
I found no way to disable AutoBoot (The status can be checked in the Power section of system report).

Anyway, i left my battery completely drain before opening the MBP, and had no issues during the process.

At this stage, when reassembling, I did disconnect the zif connector locking flap.

If this happens to you, it is not necessarily broken. It can be fixed with very fine tweezers, a good magnifier, and a bit of patience.

I had to go and get my watchemaker magnifier to achieve this.

Here is a link to the tutorial if you need it:

Repositionnement du clapet de connecteur de nappe flexible