My VW Bug has 10 lead acid batteries that need replacing. Is there a lithium ion battery that would be a drop-in replacement, i.e., it would have the same shape and be 12 volts? Or could I somehow buy or scavenge lithium ion cells and assemble them to make a 120 volt battery to take the place...

Has anyone dealt with Balqon? It appears they recently began an effort to distribute cells directly to consumers at very competitive prices. What's everyone's take on this? http://balqon.com/store.php#ecwid:category=2736691&mode=category&offset=0&sort=priceAsc