Where I came from they called it "Wildcat"...I lost my taste for shine 40 plus years ago.

The car battery in the mash barrel trick was used in cold weather to help the mash work...I actually know a Game Warden that found a still and the blue 55 gal plastic mash barrels buried in the ground contained car batteries.

Until then I always thought it was just a rumor....I do recall hearing about bad whiskey killing a few people from lead poisoning when I was a kid.
Then rumor was it was caused by car batteries or using old radiators in the distilling process.