Replace the battery in your PetSafe® 100m or Basic Remote Trainer or older Deluxe In-Ground Cat Fence™ System models. This convenient 2-pack of 3-volt coin cell batteries offers a long 5-year shelf life and typically powers your devices for 1 - 3 months. It's compatible with various PetSafe® Remote Trainers and older models of the Deluxe In-Ground Cat Fence™ system, including the 100m Little Dog Remote Trainer (PDT20 - 10644), 100m Big Dog Remote Trainer (PDT20 - 10645), ST - 100 - LD Little Dog Remote Trainer (PDT17 - 13471, PDT45 - 13472), ST - 100 - BD Big Dog Remote Trainer (PDT17 - 13473, PDT45 - 13474), ST - 70 70 m Basic Remote Trainer (PDT17 - 13480, PDT45 - 13481), Deluxe In - Ground Cat Fence™ (model purchased before August 2010, PCF - 1000 - 20), and Deluxe In - Ground Cat Fence™ Extra Receiver Collar (model purchased before August 2010, PCF - 275 - 19).

Using these PetSafe 3 - volt lithium batteries is easy. First, turn off your PetSafe® Remote Trainer or Deluxe In - Ground Cat Fence™ System. Then, open the battery compartment and remove the old battery. Insert the new 3 - volt coin cell battery, making sure to match the positive and negative signs correctly. Close the battery compartment and turn your device back on. Keep in mind that these batteries typically last 1 - 3 months, so check the power regularly. Store the extra batteries in a cool, dry place to maintain their 5 - year shelf life. If you have any issues with the battery not working, ensure it's inserted correctly and that your device is compatible.