According to a Toshiba press release, the SCib can recharge to 90% capacity in 5 minutes (!), will last for 10 years even under constant recharging conditions (compare that with a Li-ion battery, which generally starts to lose the ability to hold a charge after a year or so), and won't explode or short-circuit.
"This is a truly innovative battery. The excellent performance of the SCiB will assure its successful application in industrial systems and in the electronic vehicles markets as a new energy solution. In terms of environmental impacts, the SCiB offers a long life that will reduce waste."
The biggest problem: this will only be offered for industrial uses when it debuts in March 2008. When can we get this in our laptops, Toshiba?