I always used only PetSafe brand however in an attempt to save money I purchased a different generic brand... never again. Every single one of the others only lasted a week, therefore I went back to the PetSafe. I gave only 4 stars this time as one of the batteries only lasted a week... the only time this has happened to me with this brand. I will continue to purchase only this brand.
These batteries are complete garbage. When they fail after a couple of days and your dog wanders off you will regret ever thinking about saving some money. I thought it might have been a fluke so I tried another then another..... They are either bootlegs or expired and being sold as fresh. Buying batteries on Amazon is a mistake and it is a mistake I won't make again.
Work much better than the cheaper version I bought that always fell out of the dogs collar, these do not fall out, BUT the life of the battery does not seem to last very long (2 weeks). Happy with them just wish the life of battery lasted a little longer, wish they were cheaper in price.
These are the batteries for our dogs collars, but they don't last as long as the ones we have purchased at our local pet store, not sure if they are older or ? But they saved us money, we thought but if they last 1/2 of the life of the store bought ones they end up costing more.