Caliper Battery Saver Remix

This is a remix of https://www.thingiverse.com/thing:1734129 by derailed. This is an excellent idea but I had a couple of issues.

If you have not seen derailed's original, you should go there first and read his summary for a full description.

The first issue I had was that it kept going under the contact which does not separate it from the battery. The second issue was that it is too easy to lose the part.

Both were solved by making it a permanent attachment (It can still be removed i