Apple should be killed for their engineering solution of gluing the battery into the little bath. To remove the battery, you can’t just pull it off without breaking the seal, which almost certainly leads to sudden ignition and/or explosion. Plus, it’s soft. It can easily be squashed in your fist. Unlike the usual batteries that you can only open with a chisel. To make it easier to remove, you need to heat the lid from the other side to make the adhesive less strong. That is, you understand, yes, with the risk of tearing the battery and getting a massive explosion/fire in your hands, you need to hold it over, say, a stove. Definitely check out what happens when it depressurizes https://youtu.be/2J-h6fC1GrU
In the end, I changed the battery. The new one works great. But I don’t want to repeat that ever again.
Hi, I'm Rauf Aliev. 