Rechargeable Standard Battery, 1300mAh, NiMH 1.2V
From Amazon
ANSMANN AA Rechargeable Batteries [Pack of 4] Long Lasting Low Self Discharge AA Type 1300 mAh NiMH MaxE Pro Battery For Toys, Cameras, Flash Units, Cordless Phones, Remote Controls, Game Consoles
Conrad Electronic
Ansmann maxE HR06 AA battery (rechargeable) NiMH 1300 mAh 1.2 V 4 pc(s)