Camelion Rechargeable D size battery - 2500 mAhFeatures Increased recharge cycles (up to 1000) therefore reducing cost of ownership over lifetime High drain and large capacity Stable current over a longer duration Contains no mercury and cadmium Camelion Always Ready Ni MH rechargeable batteries have a much better atomic structure of the material within the battery, allowing the batteries to have a larger capacity with a lower self discharge rate. Retaining more than 80% of energy after 2 years on