This replacement battery is 100% compatible with the Petsafe R21, R51, and all compatible models. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% Quality Control Assurance.
This replacement battery includes a 1 Year Warranty to guarantee that it has no manufacturing defects.
This battery can be used in these models:
- MICROLITE COMPUTER
- POWER CAP
Have been buying these batteries from BatteryMart for last couple years to use in the dog's invisible fence collar. Occassionally I will have one that does not hold a charge and it is wasted money. Sometimes the new battery will be tough to get screwed into the battery compartment, usually with a little re-engineering this is overcome. Otherwise, these batteries work well and last the recommended period of time until the next change. The batteries are considerably cheaper here than those supplied by the invisible fence company.