Some lead-acid batteries can also be completely drained, unlike many other rechargables: https://www.youtube.com/watch?v=rhIRD5YVNbs https://www.youtube.com/wat

Some lead-acid batteries can also be completely drained, unlike many other rechargables: https://www.youtube.com/watch?v=rhIRD5YVNbs https://www.youtube.com/watch?v=rhIRD5YVNbs