After I had finished putting my C930 back together, I noticed that the underside of the original battery had four soft black strips adhered to it, perhaps as a cushion between the battery and the components beneath. It is possible to remove those, and they could be re-applied to the new battery before installing it, but I’m not going to bother going back now to do that.
One little addition: After removing the bottom cover of the computer, there are two little clear plastic tapes, one on each side of the battery, that you should peel free before starting to lift the battery out. One of those tapes is shown in this photo, just to the right of the icon that resembles a figure eight: https://d3nevzfk7ii3be.cloudfront.net/ig... Those clear tapes are attached to the black plastic strips beneath the battery, that you want to try to leave in place. If you don’t peel back the clear tape tabs, they will increase the likelihood of pulling up those black plastic strips when you start to lift the battery up. My original battery was adhered quite strongly to those plastic strips, and it took a fair bit of work to “dissect” them from the battery using a straight plastic tool that had an end like a regular screwdriver. I did peel those strips up off the computer a bit, but they stuck back down after I separated them from the battery. Thanks for the instructions!