4 x AAA Ni MH (Nickel Metal Hydride) 2450m Ah/1.2V rechargeable batteries High power rechargeable batteries High 950m Ah 1.2V energy capacity Replaces standard AAA batteries Overcomes 'memory effect' problems associated with Ni-Cad batteries Ideal for toys, remote control handsets, clocks & radio Ideal for use with our Duracell Simply 4 Battery Charger.