Invisible Fence Compatible R21 and R51 Dog Collar Battery

This is an invisible fence COMPATIBLE brand battery made for R21, R22, R51 and microlite dog collars. This is not the invisible fence BRAND, it is a compatible battery. Each battery will last as long or longer the original Invisible Fence Brand PowerCap batteries. Compatible with all Invisible Fence Brand R21, R51 and MicroLite electronic dog fence receiver collars. The battery design was approved by the chief engineer at the Invisible Fence Company and are manufactured in a state of the art facility in Pennsylvania. Works the same as invisible fence brand for 1/2 the cost Perimeter Technologies brand R21, R22, R51 battery