1) rechargeable NI-MH battery pack 2) 2/3AA 700mAh 3) CE/UL/ROHS approval 4)over 1000 recycles Nimh Rechargeable battery (9v 300mah)--1.2v Size 700 mAh Rechargeable* Rated Voltage: 1.2V* Chemistry: Nickel-Metal* Rated Capacity: 700mAh* Application: DVD, Mp3, Digital Camera, Portable Computer, Cordless Phone, Electrical toy and so on. NI-MH rechargeable battery