Amazon.com : PetSafe RFA-188 3 Volt Replacement Battery Module - Compatible with PetSafe 3V Lithium Battery-Operated Products for Cats and Dogs - ( RFA 188 ) : Barking Deterrent Collars : Pet Supplies
RFA-188 - Dog Collar Bark Control Battery suitable for all PetSafe Nano Collars, PetSafe Deluxe Cat Containment Collar, PetSafe Little Dog Deluxe Anti Bark Collar, PetSafe Big Dog Deluxe Anti Bark Collar