Note that the tape covering that comes on the OEM battery is not included in the battery sent from iFixIt. I removed it from the old and attached it to the new, but it does not “re-stick” very well, so it’s rather difficult to re-insert. Be careful, the ribbon is fragile.
In my case, the original replacement was faulty. iFixIt sent an RMA without hesitation, and I am happy to report that the new one works fine. But also recheck this step and steps 13/14.
This guide is spot-on, at least for a 2016 MacBook Pro. Thanks!
Do not force them. they snap on with little effort when they are aligned just right. Be patient.
Be careful here. When I went to peel up the liner on one of the batteries the adhesive strip came up with it. It should be smooth under the liner. If you start seeing ragged adhesive, stop peeling, push it back down, and try another corner.
Mine will power on, but will not charge.
The replacement battery did not come with the “tape” in this cable so it was very difficult to reinsert the cable into the zif socket. Now I can’t get the replacement battery to charge.