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Four Pack Dog Fence Batteries for Invisible Fence R21 or R51 Receiver Collars

These replacement dog fence batteries fit all Invisible Fence Brand R21, R51, or MicroLite electronic dog fence receiver collars. All Invisible Fence Computer Collar series are compatible, including Titanium, Platinum, Graphite, and Mink versions. Works in place of PowerCap Battery $ 35.80

PetSafe Compatible RFA-67 Replacement Batteries (Pack of 10)

Fido’s Fences RFA-67 compatible battery is guarantee to work with your Pet Safe product. It will last as long or longer than original Pet Safe batteries. $ 13.99

Pet Safe RFA-67D 6-Volt Battery, Economy, 6-Pack, 12 Batteries

Genuine Petsafe brand. Fits most Petsafe fence, bark and training collars, including the Petsafe wireless fence collar. $ 28.97

PetSafe 6-Volt Lithium Battery (2 Batteries per Pack)

RFA-67D lithium battery 2-pack is used for all Pet Safe recievers that require a 6-volt lithium battery module. $ 3.99