The Precharged MH-8AAP-BH Rechargeable AA NiMH Batteries (1.2V, 2600mAh) - 8-Pack is a package of 8 AA nickel-metal hydride (NiMH) batteries. Voltage of 1.2V. Non-Blister
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 up to 85% of their capacity. The batteries come pre-charged and can be recharged up to hundreds of 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.