It’s almost impossible to know what that actually means. if you look up a local company like li-cycle all they do is grind up the batteries into a powder, which is then sold to off takers and licycles case these off takers, actually only extract, nickel and cobalt from the batteries. This is the tip of the iceberg. There’s no way to know what actually happens to your battery after it is given to the city. Notably, plastic recycling is fake, and my city just makes a giant pile of plastic separate from the giant pile of garbage.