Compress the size of the photos in the repository, review it and clean up files

[apopanda]

Describe the bug
Repository has needlessly large photos

Photos
Yes, those are the issue

Additional context
I've been pushing out a develop branch for the last 15 minutes, checked the size of the repo - it sits at 500MB

We need to compress the images in this repository and clean it up a little bit. The battery holder photos are 12MB each for instance, this leads to the repository being unwieldy for no measurable gain.