San Diego-based PowerGenix has developed the Quantaray Super Z high performance Nickel-Zinc (NiZn) rechargeable AA battery. The Quantaray Super Z NiZn battery is nontoxic and offers 30% more voltage than other rechargeable batteries.
PowerGenix’s Quantaray Super Z AA rechargeable battery and charger set is available from Ritz Camera. Pricing not annonced however.