UltraCell Plus NiZn 1.6v AA - 2800mWh, AAA - 1150mWH High Voltage Rechargeable Batteries With Battery Box and Charger (Combo for 4pcs AA, 4pcs AAA, 2pcs Blue Battery Boxes, 1pcs NiZn Charger) High Voltage 1.6v AA AAA improving 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 Ultracell+ battery has up to a 33% more the energy density over standard (NiMH/NiCd) rechargeable batteries Automatic Charger with LED indicator function Support to charge batteris with any capacity and 4 independent charging slots for individual battery charging and detectiondetection