Compatible with many Petsafe Little Dog Collars, the RFA188 3V Replacement Battery provides plenty of power alongside excellent reliability. This battery is compatible with the Little Dog Deluxe In-Ground Receiver Collar. Petsafe products are extensively tested and trusted, and we do not recommend the use of cheap imitations which are available elsewhere online. All products sold by Pet Connection are genuine Petsafe products. For further information on the Petsafe Radio Fence System, read our guide to Containment Systems.