Amazon.com: Kastar 1-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 :
Alibaba.com
4.8v 400mAh Ni-CD Rechargeable Battery Pack Replacement for Exit Sign – XML Battery
4.8v 400mAh Ni-CD Rechargeable Battery Pack Replacement for Exit Sign – XML Battery
Fluke BP120MH NiMH Battery Pack for Fluke 120 series, Fluke 43 and 43B | Fluke