PET Standard Replacement RFA-67 6V Lithium Batteries Compatible with PetSafe Battery-Operated Pet Products and Specific Dog Receiver Collars - RFA-67D-11 (Pack of 10)

These are easy to replace in my dog's perimeter collar. He wears two shockers to keep him from going walkabout at night. We live on a farm and can't fence him in completely and the wireless perimeter reminder (shock) system works well and he knows his limits. But sometimes he is willing to take a few seconds of zap to go on an adventure in the woods or in the neighboring subdivision. We replace these about once a month when the unit starts to blink red. They work well with an embedded 2032 coin sized battery inside (which is very hard to replace without wrecking the battery case), so we buy these to replace the batteries. They pop out with a half turn with a screwdriver and go back in the same way.

Fits great on the collar. battery lasts about a month with a dog that tests the boundary alot. Im sure it would last longer if they didn't seat at the edge just to hear the beeps.

Works well. Not as long lasting during friged weather. Durable.

Some of the batteries in the pack are dead.

Came fast and was a great price

We’ve had our pet safe fence for several years now, same 2 dogs. Pet safe brand batteries last around 2-3 months for my most active fence tester and around 3-4 for the other that never gets close to the boundary.Some in this pack were ok and lasted around 2 months max but several had to be replaced within days of installation. One would think a battery should last more than a few days since the dogs are remaining in the fence.Thankfully my dogs are well trained and rarely exit the fence, even with dead batteries but ⛔️**** if you’re needing the batteries to actually work to keep Fido or Fifi from running away/safe, you should spend the extra money and get pet safe brand! ****⛔️I will be purchasing another pack because my dogs are well trained and won’t get lost. I’m also hoping perhaps I had a bad batch but others should know:—-I’m giving them one star DUE TO SAFETY REASONS. I hope this review saves someone’s floofer from running into the street thinking “I just changed the battery, they will be fine” again, if your dog depends on this for safety, do not buy this brand!—- There may be a quality control/function issues. Others have said they fall out.—-You won’t technically get the number of batteries you think you’re getting if some of them are doa or only last a couple days but the price alone is unbeatable. You can afford to have a few DOA at this price point (Unfortunately I didn’t write down how long each battery lasted compared to the pet safe brand but it was definitely shorter based on my order history alone)—-Unlike others that rated these low, mine stayed in, no issue with them falling out however dying within a couple days is worse in my opinion due to a false sense of security

We have used these many times...quality product

Work perfectly great price.