High Tech Pet RFA-67 Petsafe Compatible 6-volt Trusted Electronic Pet Collar Replacement Battery - (6) Pack Contains a Panasonic lithium coin cell; The best battery of its kind Operates most Petsafe brand electronic fence, wireless fence and bark control collars Manufactured by High Tech Pet, the leading name in trusted, high quality pet products Guaranteed to last as long or longer as the OEM battery and to meet or exceed all OEM specifications