Overview: Rechargeable Battery Capacity: 850m Ah Voltage: 1.2 V Chemistry: Ni-MH (Nickel Metal Hydride) Rechargeable Times: Up to 1100 Times Memory effect: No Cadmium: Free Can be rapidly charged with any plug in charger, Exact replacement for standard AAA size battery in all the devices. Package Included:4 x 850 m Ah rechargeable batteries Specification: Weight Approx:48.3g Size Approx:4.4 x 4 x 1