On Mon, 19 Feb 2018 17:03:30 -0800, John Robertson
wrote:

I've had 100's of NiCad/NiCd batteries leak on our pinball game boards
since the 1970s. I stored these leakers for many years in a couple of
milk crates (didn't want to simply toss in garbage) until the recycling
provided by our city (Vancouver, BC) gave us a new home for them.

If you trash them, do they emit some sort of dangerous substance? I
would prefer to recycle stuff like that, but I've never seen any place
that takes small batteries like that. In my area. (Yes, they do recycle
car batteries though).