They can last 100+ years if taken care of (which means kept full of clean water).
Wow. I didn't know such a thing existed. I learn a lot from you guys!
I've got forty of them that I am about to install with my solar system. I'll let you know my impressions after I got them running.
These Edison battery cells are still in use after 100 years, obviously they don't make them anymore because
companies don't like things that last forever, it hurts their bottom line.......