20-Cell 12-Volt 7600mAh Ni-MH Batteries with Quick-Connect barrel connector. Also comes with thermal over-charge protection. Cells are ran in tandem and stacked two wide, single high.
The exact dimensions of this pack are: 175 x 68 x 34mm
The cable Length is: 40mm
The connector is 35mm long
The outer diameter of the barrel connector is: 5.5mm
The Center pin size is: 2.1mm
The barrel connector is the "Jack" not the "Plug" so a standard wall mount power supply will plug into this battery.
The individual cells in this pack are non-conforming battery sizes.
Individual cell dimensions: 66.1mm (L) x 16.5mm (D)
Some people call this approximate size a "Fat-A" or "4/3-A"
