Trusted Pet RFA-67 Replacement 6V 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. These modules contain the highest quality genuine PANASONIC lithium cell inside. They are manufactured by Trusted Pet, the most trusted name in high-quality pet products. These batteries are guaranteed to meet or exceed all applicable Petsafe OEM specifications. Compatible for Pet Safe RFA-67 batteries Petsafe fence collars (including Petsafe Wireless Instant fence), Petsafe bark collars, and Petsafe remote training collars.(-Fits most Petsafe bark and remote training collars, inground fence collars, and pif-275 Petsafe wireless fence system collar 100% compatible PetSafe RFA-67 6 Volt 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 Contains a 6-Volt Panasonic lithium coin cell. The best battery of its kind) Key Features: Replacement PetSafe RFA-67 6-volt batteries that contain a 6-volt Panasonic lithium coin cell. Compatible with most PetSafe bark and remote training collars (sold separately). Works with in-ground fence and wireless electric fence system collars (sold separately). Long-lasting. Great to have on hand as a backup!