NiMH cell with alkaleak disease
It's an old "Soshine" branded NiMH AAA cell claiming 900mah. I'm not about to test it but I did use it for a while. I've standardized on Eneloops since then. Anyway this is FYI so you know that NiMH leaking is a thing.
It's terminal.
It's not his volt.
Time for that battery to go back to its home in the ocean.
Eneloops Pro. Worth the price.