These Invisible Fence® Brand compatible batteries were made by Radio Systems Corp. They now own both Invisible Fence® Brand and the PetSafe Brand products. Radio Systems Corp. produced these batteries right before they purchased Invisible Fence® last year. These batteries are no longer produced by Radio Systems Corp. When they are all sold, there will be no more at this great deal.

We have Invisible Fence® Brand compatible batteries to fit your Invisible Fence® Brand collar for as low as $8.75 each! These batteries are guaranteed to be compatible with your Invisible Fence® Brand R21 and R51 receivers produced any time in the last 8 years. These batteries are an exact aftermarket copy of the Invisible Fence® Brand Power Cap® battery.

The Battery Bottom Line: With our aftermarket Invisible Fence® Brand compatible batteries you could go a full six months for a fraction of the normal battery cost. If your receiver collar starts flashing the low battery light within the first 120 days, remove the battery for a minute or two and then reinstall it. The light should stop flashing, and you’ll be good to go for an extended period of time. All of our aftermarket Invisible Fence® Brand compatible batteries meet or exceed the original manufacturer’s specifications. The shelf life on these Invisible Fence® Brand compatible batteries is five years. Stock up on batteries now and save with our Free Shipping offer for orders over $50.00