MacBook Pro 13" Retina Display Early 2015 Trackpad
I followed this exactly and was able to replace my broken trackpad. I did not have to replace the ribbon OR the battery. However I would suggest getting the ribbon since it’s fairly cheap, as for the batteries I was able to do it with a card only. I didn’t use any heat or the liquid but it takes some time. You really have to work the card in there to release the glue. Also you must be very careful not to bend the batteries or damage them, if you do you must replace with new. This took me about 1.5hrs and my computer works like new. Apple cost for this job was around $450, I did it for $120. Big ups to ifixit for this awesome tutorial, tool set and parts!
On a side note, only use quality tools, the cheap ones will break or strip the screws.
I did not bend my batteries nearly this much, it allowed me to reuse them but it takes patiences to get them free.
I suggest taping the batteries together on the top, this will keep them intact while you work the card back and forth. If you are very careful during these steps you can reuse your batter but make sure to inspect it Very well. If there is any damage whatsoever do not run the risk of leaking fluid to the rest of your computer.
I was able to remove the batteries using the plastic ifixit card only, it requires you to work it back and forth but it can be done. However, for a few bucks I would suggest the heating pad. I was able to reuse my batteries (although not suggested).
Make sure you replace these screws exactly where they came from, same with the other speak.
These small T3 screws are in tight, same with the following step to remove the trackpad itself. Make sure you use a quality set of tools. Trust me, the cheap sets on amazon will break or strip the screw. If that happens you’ll have to use an easy out, or drill the hole.