PowerGenix ZR-PGX1HRAA-4B 1 Hour Quick Charger with 4 AA 1.6v NiZn Rechargeable Batteries High Voltage 1.6v AA Offers improved performance for any high drain devices especially Digital Cameras. Environmentally Green - Both nickel and zinc are non-toxic and recycled easily and inexpensively. High Energy Density - The PowerGenix battery has up to a33% more the energy densityover standard rechargeable batteries Input voltage: 110 - 240V, 50/60 HZ AC Charger will charge 1,2,3,or 4 AA NiZN batteries or 1 or 2 AAA NiZN batteries independently