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
PetStandard Replacement Batteries for PetSafe RFA-67 (Pack of 10) - Walmart.com
RFA-67 Petsafe® Alternative replacement battery (6-pack) [HT-RFA67-6] - $13.99 : Grain Valley Dog Supply, Distributor Catalog