These Invisible Fence® Brand compatible batteries are made by Radio Systems Corp. They now own both Invisible Fence® and the PetSafe Brand. Radio Systems Corp. produced these batteries right before they purchased Invisible Fence last year. These batteries are no longer produced by Radio Systems. 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 5 years. These batteries are an exact aftermarket copy of the Invisible Fence® Brand Power Cap® battery. Free yourself from that expensive Invisible Fence® Brand battery plan by trying our Invisible Fence® Brand compatible batteries

The Battery Bottom Line: Invisible Fence® designs their batteries to work for just over 90 days. That way they can mail you a new one every 90 days. It a great marketing plan. But, it will cost you a lot of extra money. With our aftermarket Invisible Fence® Brand compatible batteries you could go a full six months for a fraction of the cost. If your receiver collar starts flashing the low battery light within the first 90 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 of 90 days. Many customers have reported a 6 month + battery life out of each of our aftermarket Invisible Fence® Brand compatible batteries. The shelf life on these batteries is five years. Stock up on batteries now and save with our Free Shipping offer for orders over $50.00