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This is a 3V lithium coin cell made as a replacement for the batteries inside Invisible Fence, PetSafe and Pet Stop electronic dog collars, including the R21, R22 and R51 models. It is built to the same specification as the original cell, so the collar's tone, correction and battery-low warning behave as they did with the factory battery. It suits owners of these containment systems who need a fresh cell without buying a new collar. Against brand-name replacement cells it offers the same chemistry and voltage for less, though it is a single cell rather than a kit with tools or a seal.
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Lowest price we've seen: $14.99 on Nov 9 at Batteries Plus. Tracked across 1 store since Nov 9.
Buyers mostly compare it with the collar maker's own battery and say it performs the same for less.
This is a 3V lithium battery for electronic dog collars used with invisible fence systems. It works with PetSafe, Pet Stop, and Invisible Fence R21, R22, and R51 collar models.
The battery uses lithium manganese dioxide (high drain) chemistry. It powers the electronic functions of the collar and is built to hold a steady charge for long-term operation. It matches original equipment standards for performance and safety.
