Each battery lasts about 1 month and has a 5 year shelf life.
Features:
- Includes 4 batteries which will last a year under normal usage.
- 3-volt battery
- Battery lasts 1 month under normal usage
- Fits all Petsafe collars requiring a 3-volt battery
PetSafe 3 Volt Battery Module Year Supply – RFA-188-YEAR
