In my experience LiIon car batteries are a total pain. Regular battery chargers fry them, or won't turn on to charge. So you need a Li compatible charger. If yo

In my experience LiIon car batteries are a total pain. Regular battery chargers fry them, or won't turn on to charge. So you need a Li compatible charger. If you let one go flat it bricks and replacements are either very costly or impossible to source locally. I had to have a car transported by flat bed 300 miles to a dealer to have the dead Lithium battery replaced under warranty.