The most powerful rechargeable technology currently available: Nickel-Metal Hydride (NiMH). For high-tech devices such as digital cameras and MP3 players rechargeable batteries provide cost-effective re-usable power. Ref - AA.
Duracell Rechargeable AA 1300mAh batteries can be recharged 100's times
1.2v
P4
Unused Duracell Rechargeable AA 1300mAh batteries are guaranteed to last 3 years