Manufacturer: Panasonic - BSG  •  RoHS/pb-free: Pb-free  •  Battery Type: Nickel Cadmium  •  Voltage - Rated: 4.8V  •  Capacity: 500mAh  •  Battery Cell Size: AA - Button Top  •  Number of Cells: 4  •  Structure: 2 Rows x 2 Cells Front to Back  •  Termination Style: Solder Tab  •  Rechargeability: Yes  •  Other PartNo: P161-L022, P161L2X2