Chosen Solution
How to replace the battery of a Sphero 2.0 and/or BB-8?
Hi @icmho , Here’s a link to a video that shows how to dis-assemble the droid to access the battery. The opening method in the video may be a bit too destructive ;-) The batteries are seen being removed at about 3:50 minutes into the video.
It doesn’t take hours. I did mine in about 10 minutes. Don’t use a hacksaw. Too rough.