I got the battery in yesterday. Getting the old battery off the "plate" of the older Kobo Mini was not fun. It took very careful prying and some dental floss. Unfortunately I wasn't careful enough with the old battery connector, and it literally crumbled on me. So, for now, I don't have a second usable Kobo Mini. (I'll probably try to use the battery in the N
905C Touch, when its battery wears out (still in pretty good shape, as is the N
905B battery.)
I broke down and ordered a Kobo Mini battery and a 3 wire Kobo Touch battery at AlliExpress. Both have an expected delivery date of about two months — so summer will be in full swing by the time I get back to them.
If anyone is interested in the batteries I bought at AlliExpress...
Kobo Mini...
https://www.aliexpress.us/item/32568...2usa4itemAdapt
Kobo Touch N
905 (3 wire)...
https://www.aliexpress.us/item/32568...2usa4itemAdapt