Keep your vital electronic gadgets powered with this pack of two Duracell Rechargeable NiMH Batteries. These Duracell batteries with Duralock Power Preserve Technology can be recharged up to 300 times with no memory effect. High-performance economical nickel-metal hydride (NiMH) rechargeable cells are good for devices such as PDAs digital audio devices and cameras. They can be used for other everyday electronic items.