See the second half of https://rescue1130.blogspot.com/2018/02/built-battery-for-ro... for the start of this story.

I considered posting this yesterday but figured the title would be corrected and just be confusing. Carl is not the most organized blogger and really seems to mostly use his blog as a project journal.

And the third update: https://rescue1130.blogspot.com/2018/03/various-items-disk-d...