On the batteries, one can do a few things. If one were to dump out the electrolyte into a container to hold, then flush battery with water, mix 5 lbs of epsom salts with 1 gal of water over low heat, refill battery with epsom salt solution, and place on charger.
If the battery has internal problems so that it cannot be a battery, then stop after dumping electrolyte and flushing with fresh water. Lead will be worth a bunch as time goes along. The last lead smelter in operation was shut down last year. All lead left will be recycled, at the bottom of someones favorite fishing spot, or at the range bullet trap.