Amazon.com : PetSafe RFA-67 6 Volt Replacement Batteries - 2 Pack - Compatible with PetSafe 6V Lithium Battery-Operated Pet Products and Specific Dog Receiver Collars - RFA-67D-11, Black : PetSafe : Barking Deterrent Collars : Pet Supplies
RFA-67 Petsafe® Alternative replacement battery (2-pack) [HT-RFA67-2] - $5.45 : Grain Valley Dog Supply, Distributor Catalog
Amazon.com : PET STANDARD Replacement RFA-67 6V Lithium Batteries Compatible With PetSafe Battery-Operated Pet Products and Specific Dog Receiver Collars - RFA-67D-11 (Pack of 10) : Pet Supplies