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?

I bought these LS14250 / ER14250 3.6V lithium batteries for about $9.99 when my husband needed replacement batteries for one of his motion sensor devices he uses with his electronics setup. These are ½ AA size 3.6-volt lithium batteries, which are smaller than standard AA batteries and are typically used in specialty electronics like sensors and small electronic equipment. The batteries arrived well packaged with clear labeling. Installation was simple—just swap out the old battery and the device powered up immediately. So far they’ve worked reliably and held steady power, which is important for electronics that depend on consistent voltage. The 4-pack price is a good value compared with some name-brand versions that cost quite a bit more for the same type of battery. The only downside is these aren’t a common household battery, so they’re only useful if your device specifically requires LS14250 / ER14250 3.6V batteries, and they’re not rechargeable. Overall they worked well for our device and seem like a reliable, affordable replacement option for compatible electronics.

Excellent!!

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

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.

I bought a box of these batteries and the first 2 batteries installed in a Garage Door Opener Door Sensor. The first batteries lasted about a year and 2 months. I replaced them with 2 from the same box after the box sat in a climate controlled environment only to have those 2 batteries from the same box last not even a month. I replaced them again thinking maybe just a bad battery in the batch. The next two batteries lasted a week. When I went to replace those two I decided to put a volt meter on the remaining 4 batteries and they didn't even register on the volt meter after sitting in a battery case with other types of batteries for a year and half. These batteries were the only ones to die in the box in that case. I had regular AA, AAA, C, D and 123 batteries in the same case. These batteries were the only ones to die in the relatively short time for batteries in perfect environmental conditions. Most batteries have a much longer shelf life I would say of 5 years or longer, but 1 and 1/2 years is unsatisfactory. I cannot recomment these batteries from my own experience with them.

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.

Unlike two other brands of batteries of this size I bought through Amazon, THESE 1200ma BATTERIES CAME FULLY CHARGED AND ACTUALLY FIT IN MY DEVICE. All of the “other brands” eight batteries I purchased arrived either stone dead or ALMOST dead. Additionally, I had to peel the labels off of 1/2 of these other “brand X” batteries to reduce the diameter enough to fit them in my device! I HIGHLY RECOMMEND THESE TYRONE ER14250 3.6 Volt 1200 mAh Lithium Batteries. THEY FIT AND WORK AS PROMISED! Should I need more, I WILL DEFINITELY BUY THIS BRAND AGAIN!