TOPA NI-CD AA500MAH 2.4V AA 500mAh Battery Pack Replacement for Exit S – XML Battery
Amazon.com: Kastar 2-Pack 4.8V 500mAh Ni-MH Rechargeable Battery Replacement for Dogtra BP12RT Dog Training Collar Receiver and 1900 NCP, 1902 NCP, 300M, YS500, SureStim H Plus, 1900 NCP, 302M and More Models :