I'm actually in the midst of replacing the battery on my 2015 15" as I noticed it was beginning to swell (certainly explained the terrible battery life I was getting!), wound up ordering an iFixit battery since I didn't trust anything on Amazon or eBay. I already removed the old battery which was actually way easier than I thought, albeit it was a somewhat messy process due to the adhesive strips Apple used. Isopropyl alcohol works wonders for softening the adhesive BTW.
Also while the iFixit guide recommends doing a full teardown, but I found that was completely unnecessary. Really the only thing you need to remove is the trackpad cable which comes off pretty easily if you're careful. I also found that unscrewing the speaker housings helped a bit so you can move them around a bit when cleaning up the old adhesive.
Also while the iFixit guide recommends doing a full teardown, but I found that was completely unnecessary. Really the only thing you need to remove is the trackpad cable which comes off pretty easily if you're careful. I also found that unscrewing the speaker housings helped a bit so you can move them around a bit when cleaning up the old adhesive.
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