1/2 AA Size LS 14250 ER14250 3.6 Volt 1200 mAh Lithium Batteries 4 Pack, Tyrone Batteries Compatible for Dogwatch Dog Collar and Some of Movement Monitor/Home Security System/Alarm System

Look, I don't know why I'm writing a review for batteries either. Yes, they work. Yes, they're 3.6 volts of pure lithium power, which sounds cool and vaguely dangerous. Yes, they are 1/2 AA size — a size that apparently exists and isn't just something your smoke detector made up out of spite. I popped one into a device I haven't touched since 2008, and guess what? It powered right up like it hadn’t been abandoned in a drawer for 15 years. So yeah, the batteries work fine. Congratulations, science. But let’s be honest: no one is reading battery reviews unless they’re: Already confused about what size they need, Distrusting the product because it’s not sold in blister packaging that requires power tools to open, or Just killing time while avoiding assembling IKEA furniture. So here I am. Telling you that these tiny, unreasonably powerful little cylinders are doing their job without complaint. They’re the kind of batteries that sit quietly in your CO2 detector or some obscure garage sensor, silently keeping you alive without asking for praise. Humble. Noble. Unscented. Pros: Work as advertised, which is rare in this economy. Come in a 4-pack, because buying just one battery would be weird and sad. Will probably still be working after society collapses. Cons: Not exciting. Like, at all. Zero fireworks. No personality. No LED display. No Bluetooth. Just... voltage. Writing this review has me questioning my life choices. Again. Final Verdict: ⭐️⭐️⭐️⭐️⭐️ – 5 volts — I mean, stars. They work. They’re batteries. What more do you want? A parade?

Bought these for my eve window and door sensors. These batteries actually work and have a charge. Other brands I've bought it was a 50/50 chance of working. These just worked right away.

We use these batteries for our machine tool probes. My guys tell me they like these because they last significantly longer than some of the other brands, which are more expensive, that we have tried in the past. The 4-packs are a good value and don't age out before we use them. I can recommend them.

Revived prmomty and they appear to be correct but I purchased as reserves so I haven’t actually used one yet

I use these for my pet electronic collars. They work great and last about 6 months. Good value for price

I've purchased these every few months for the last couple of years, and they used to be good and had a decent shelf life. Now the most recent batteries I get show a good voltage when checked with a volt meter, but when installed in the door contact sensor where I use them, the voltage drops to below a usable level and the sensor does not work. When I finally find one that works at all, the sensor reports a battery level in the 30% range. Don't bother with these, I've had two orders of these that were junk and at this point I'm throwing away 5 brand new batteries that didn't work when installed.

This 1/2 AA lithium Thionyl Chloride cell is exactly what I needed—high energy, dependable. I’ve used it in my home security system, and it’s been flawless. It’s also great for baby movement monitors like the Snuza Hero (non-SE models). An excellent investment for anyone who needs reliable, long-lasting backup power.

Well priced, used item to replace alarm door and window sensors.