Synergy DigitalDog Collar Batteries, Compatible with Pet Stop UltraElite Receiver Dog Collar, (Lithium, 6V, 160 mAh) Ultra High Capacity, Combo-Pack Includes: 2 x SDDC-L1110 Batteries

Underground fence for small dog that really doesn't need it, but she's used to wearing the collar and I know she won't wander off chasing butterflies...

I just order a set. It arrived Friday July 26 2019. I put it in my dog's PetStop collar. By July 31,2019 (yesterday), it is already flashing red due to low battery. The batteries PetStop sends me last between 5-6 months. It was a two pack, so I will try the other one and report back. But right now I would caution you to not buy these terrible batteries. Seems like a cheap alkaline battery with Lithium printed on it. It is a shame, it was a decent price too. Update Aug 11, let my dog out this morning, a woman was walking a German sheppard on a leash. My dog ran back and forth along the perimeter, but then he was clearly across the boundary and even touch the street pavement in places. So battery #2 was completely dead by 12 days. Not sure how long before, this was the first time I paid attention. All I know is the seller took my money and both these batteries are of low quality. I am wondering if these were used or returned and then sent of to me. DO NOT BUY

Tried these batteries since the name brand versions are really expensive. These appear to be the same batteries I receive when I order directly from the dog collar vendor. They are lithium, which I’ve been told is important to the battery life. I’ve only been using for a few weeks, so I can’t speak to the battery life yet, but I’m hoping it’s 5-6 months like the ones I get from the collar vendor.

I bought this two pack prior to a recent 3 day golf trip I took in case the battery on my range finder failed...and wouldn't you know it, it died on the 3rd hole. These were a perfect replacement for my Tour V3 rangefinder and hope the longevity of the battery is as long as the original Duracell that came with my range finder.

These batteries are very long life. I use them in the dog collars that work with the underground dog fence.

First battery lasted 4 days. Second battery lasted 9 days went back to energizer

The battery life is not sufficient. I have ordered these batteries from Amazon for years and like clockwork I need new ones for both dog collars every 11.5 months. These are not good or slightly ok batteries.

Ease