NiZn AA Size 2500mWh 1.6V Rechargeable Battery for Camera 4 Pack Battery package may different from pictures High Voltage 1.6v AA AAA improving performance for any high drain devices especially Digital Cameras High Energy Density - battery has up to a 33% more the energy density over standard (NiMH/NiCd) rechargeable batteries Environmentally Green - Both nickel and zinc are non-toxic and recycled easily and inexpensively Support to charge batteris with any capacity and 4 independent charging slots for individual battery charging and detection detection