* Fits most Petsafe bark and remote training collars, inground fence collars and pif-275 Petsafe wireless fence system collar * PetSafe RFA-67 6 Volt Replacement Batteries * Guaranteed to last as long or longer as the OEM battery and to meet or exceed all OEM specifications * Operates most Petsafe brand electronic fence, wireless fence and bark control collars * It contains a 6-Volt Panasonic lithium coin cell. The best battery of its kind Replacement PetSafe batteries for PetSafe bark collars, in-ground and wireless electronic fence collars. Replaces Petsafe model RFA-67. Please note, these are not the cheap Chinese knock-off batteries sold on Amazon and elsewhere.