Originally Posted By: tman
Originally Posted By: larry818
Actually, you're right. An electric car doesn't just die when it runs out of juice, it just gets slower and slower.

This device is a capacitor and not a battery. It'll just stop.

The discharge curve for most rechargeable battery technologies is pretty flat and then steep right at the end. You don't want to keep trying to drain your batteries more at this point anyway because you'll end up damaging them.