Toshiba is going to release quite interesting batteries in March 2008. The firm says their upcoming SCiB batteries recharge to 90% in under 5 minutes and remain useful for 10 years (5,000+ recharges).
Now they're here, courtesy of Toshiba who just announced their Super Charge ion Batteries, or SCiBs. The wee 2.4V version measures 62 x 95 x 13-mm / 150-grams while the big, bad 24V version measures in at 100 x 300 x 45-mm and 2000-grams. Oh, and they won't short-circuit and explode. The problem? The first production run is for industrial-use (non-CE) class devices like hybrid cars and the like.