Originally Posted by VersaceMan
This is good news - I can't wait to see what the future has in store for cars such as these.
These are Lithium Ion. The same battery technology that powers laptops. I've had many laptops, and used them for work related travel, so I use them off AC often on planes. The batteries last forever, but they don't retain their charge like new after about 6 months. Then its a steady downhill process until about 3 or so years later when you can barely get 30-40% of the original charge on your battery. If you daily drive your car plug-in car, I can't imagine that you'll get close to 250 miles per charge within 1 year.
Plus, its really easy to manage a battery in a laptop. If you want to "refresh" it, you just run it until its dead.. use it unplugged, then plug it in and let it charge until full. Cars need to be ready immediately and batteries won't be able to be managed quite so well. I just can't see these cars being economical. Think about the resale.. yikes.