These powerful Varta Rechargeable AAA size batteries are 1.2V 1000mAh NiMH batteries. The 1000mAh rating is a measurement of the battery's capacity. The higher the mAh rating the longer the battery will last in an appliance. These extremely high capacity batteries are ideal for high drain power hungry equipment. Varta rechargeable AAA size batteries are pre-charged in the Varta factory and are Ready-2-Use as soon as you take them out of the pack. Often referred to as Varta Rechargeable Power Accu AAA HR03 batteries, these batteries keep their charge longer than ordinary rechargeable batteries. Once charged, Varta Ready-2-Use batteries will retain 80% of their charge for up to 12 months in storage. Nominal Voltage 1.2V Capacity 1000mAh Type Ni-MH Part Number Varta 5703 HR03 1000 mAh. Four batteries per pack supplied.