When you reply to a question, direct your answer to both the questioner and other members of the audience. Try to keep your responses as focused as possible. This will help keep them brief and preserve space for other questions.
Four Pack Dog Fence Batteries for Invisible Fence R21 or R51 Receiver Collars. eBay determines this price through a machine learned model of the product's sale prices within the last 90 days. eBay determines trending price through a machine learned model of the productâs sale prices within the last 90 days.
Tips to know. 1  Itâs best to wait until your dog reaches the age of 8 weeks before considering an invisible fence. 2  Be sure to know how long the battery lasts. If the battery doesnât work, the collar wonât beep, allowing the dog to escape. Most collars today will have some sort of indicator that specifies when the battery gets low.