Great guide; detailed and helpful! Just replaced the battery! Great pictures, too, as it really helped me understand the layout of the internals. I bought the battery from ifixit and the essential electronics toolkit that they sell as well. I honestly don’t think I could have done it without that essential electronics toolkit. I certainly don’t have some of those bits and tools on hand.

Good:

I was able to successfully remove the top part (the glass part) without breaking it. I did reuse it again. I noticed the tiny foam circle that surrounds the camera. If you purchase a replacement glass top part like I did (for the possibility of breaking it when removing it), you may find that the foam circle is a little offset. You also may need to remove the existing foam circle if your replacement glass top has one already attached.

Bad:

The battery’s adhesive is very strong. You will have to work hard to pry the battery off, so don’t panic. Keep at it, little by little.