VINTRONS 7.2V Battery for Sportdog MH330AAAK6HC, WetlandHunter SD-2000CAMO ST101-W Transmitter Capacity: 300mAh Type: Ni-MH Volts: 7.2V Size : 29.71 x 31.00 x 20.76mm Certificated with ISO9001, RoHS & CE;