1) rechargeable NI-MH battery pack 2) 1.2V 1200mAh 4/5AA 3) CE/UL/ROHS approval 4)over 1000 recycles Nimh Rechargeable battery (4/5AA 1200mah)--4/5AA Size 1200 mAh Rechargeable* Rated Voltage: 1.2V* Chemistry: Nickel-Metal* Rated Capacity: 1200mAh* Application: DVD, Mp3, Digital Camera, Portable Computer, Cordless Phone, Electrical toy and so on. NI-MH rechargeable battery