Manufacturer: Sanyo Energy  •  RoHS/pb-free: Pb-free  •  Battery Type: Nickel Cadmium  •  Voltage - Rated: 6V  •  Capacity: 4000mAh  •  Battery Cell Size: D - Button Top  •  Number of Cells: 5  •  Structure: 1 Row x 5 Cells Front to Back  •  Termination Style: Solder Tab  •  Rechargeability: Yes  •  Other PartNo: SY125-L051