A couple of years ago now, I ordered a replacement battery through Apple for an older plastic MacBook - the user replaceable ones, where you use a coin to unlock the switch and lift it out. When I went to collect it, the Apple Store geniuses refused to give it to me unless I brought in my laptop and let them keep it for a week to do the replacement, as they were convinced no Macs have user replaceable batteries. (I declined & bought a battery through an Apple authorised service center instead, for cheaper than Apple was charging.)
For those who don't remember, here's Apple's user manual for customer to replace laptop batteries themselves (PDF):
For those who don't remember, here's Apple's user manual for customer to replace laptop batteries themselves (PDF):
https://manuals.info.apple.com/MANUALS/0/MA159/en_US/MacBook...