In this tutorial video from Car Groves, you’ll learn how to rejuvenate a dead lead acid battery by using Epsom salts to get rid of the scale that builds up on the battery plates over time.
This is a bit time consuming, but good to know in case the civilized world goes boom and you can’t run out and buy another one easily.
Or maybe, you’re just tired of ponying up another $150 for a battery…. either way, now you know why they want the battery “core” back!