The Powerex IMEDION "Ready When You Are!" Rechargeable AAA NiMH Batteries
(1.2V, 950mAh) is AAA nickel-metal hydride (NiMH) batteries. They have a
voltage of 1.2V and a capacity of 950mAh. The batteries are capable of being
stored for an extended period of time and still retaining a full or nearly
full charge. After a year, for instance, they will retain 85% of their
capacity. The batteries come pre-charged and can be recharged up to 1000
times. The purchase of NiMH batteries like these saves you money, since you
won't need to buy endless supplies of non-rechargeable alkaline batteries.