PetSafe collar batteries
Which PetSafe collar battery do I need?
- Updated Oct 25, 2026
- 6 sources
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Quick answer
Most PetSafe collars with a replaceable battery take one of two sealed battery modules: the 6-volt RFA-67 or the 3-volt RFA-188. They look alike, twist in the same way, and don't swap. The RFA-67 goes in full-size fence and bark collars. The RFA-188 goes in the little-dog and cat collars.
Fit chart
These are the collars and systems PetSafe lists on each battery's product page.
| Battery | Collars PetSafe lists | Fences PetSafe lists |
|---|---|---|
| RFA-67 (6V) | Wireless Pet Containment System Receiver Collar, Stay & Play Wireless Fence Replaceable Battery Receiver Collar, Deluxe UltraLight Receiver Collar, Basic Bark Control Collar | Wireless Pet Containment System, Stay & Play Wireless Fence with Replaceable Battery Collar, Basic In-Ground Fence, In-Ground Fence |
| RFA-188 (3V) | Little Dog In-Ground Fence Receiver Collar, In-Ground Fence Receiver Collar for Cats, Elite Little Dog Spray Bark Control Collar, Vibration Bark Control Collar | Little Dog In-Ground Fence, In-Ground Cat Fence |
PetSafe's Deluxe In-Ground Cat Fence Receiver page also lists one RFA-188 as its battery. The Stay & Play Replaceable Battery collar (sold earlier as the Free to Roam collar) takes the RFA-67.
Not sure which one is in your collar?
- Look at the old battery. PetSafe says a genuine RFA-67 is printed with arrows, the model number, the PetSafe.com website and a seven-digit date code. The RFA-188 is printed with the PetSafe.com website.
- Check the collar's size. Little-dog and cat collars use the smaller 3V RFA-188. Standard fence collars and the Basic Bark Control Collar use the 6V RFA-67.
- Check the manual. PetSafe's RFA-188 page says to check your manual for the right battery.
- Rechargeable collars take no battery. Collars like the YardMax and the Rechargeable In-Ground Fence Receiver charge by cord instead.
How long a battery lasts
| Battery | Voltage | Life per PetSafe |
|---|---|---|
| RFA-67 | 6V | 1–3 months, depending on use |
| RFA-188 | 3V | About 1–2 months; up to 5 years on the shelf |
PetSafe's own pages give slightly different numbers. Its Stay & Play collar page says 1–2 months for the RFA-67, and the RFA-188 page says about 1 month in one place and 1–2 months in another. PetSafe notes that the first battery may run down faster during the first weeks of use, and its support team says off-brand batteries are known to have a shorter life. See RFA-67 battery equivalent.
Low-battery light: on the Basic In-Ground Fence collar, PetSafe says a red light flashing once every 4–5 seconds means the battery is low. Swap it before it dies, because a dead collar does nothing.
Next steps
- How to change a PetSafe collar battery
- PetSafe collar not working after a battery change? Five checks
- RFA-67 battery equivalent: what PetSafe says about off-brand batteries
How we work: fit, battery life and lights on this page come from PetSafe's own product and support pages, listed below. We have not tested these batteries or collars ourselves. This page is about batteries only, not about training or whether a collar is right for your pet.
Questions people ask
What battery does a PetSafe collar take?
Most PetSafe collars with a replaceable battery take either the 6-volt RFA-67 or the 3-volt RFA-188. The RFA-67 fits collars like the Basic In-Ground Fence, Wireless Pet Containment, Stay & Play Replaceable Battery and Basic Bark Control collars. The RFA-188 fits little-dog and cat fence collars and some bark collars.
Are the RFA-67 and RFA-188 interchangeable?
No. The RFA-67 is a 6-volt battery and the RFA-188 is a 3-volt battery, and PetSafe lists different collars for each. Check the old battery or your manual before you buy.
How long does a PetSafe collar battery last?
PetSafe says the RFA-67 lasts 1 to 3 months depending on use, and the RFA-188 about 1 to 2 months with up to a 5-year shelf life.
How do I know my PetSafe collar battery is low?
On the Basic In-Ground Fence collar, PetSafe says a red light flashing once every 4 to 5 seconds means the battery is low.
Sources
Last checked Oct 25, 2026. Fit, battery life, lights and steps come from PetSafe's own product and support pages. Prices change, so check the listing before you buy.
