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
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Interstate Batteries LIT0307 RFA-67 Battery Lithium Pet Safe 6V - Pack of 2 - In Shelby, NC - Shelby Hardware & Supply Company
PetSafe RFA-18-11 6V Alkaline Battery for Gentle Spray Bark Collar
PetSafe RFA-18 Battery 6V Alkaline USA SELLER 729849000063 | eBay