A very noticeable expanded lifespan with these surefires. A little pricey but worth it. The shelf life on these batteries is 10 years per the manufacturer.

These are the only batteries i use in my flashlight. Top rate 123 batteries for flashlights and headlamps. I'm a duracell battery guy but these have never disappointed me.

Batteries only last about 70 minutes of use in a single led tactical flashlight before fall on their face and leaving me with about half of the lumens as when fresh. I'm on my last battery and its been less than a year since purchasing the pack. Each ...  Read More

Amazon's one size fits all return policy is inappropriate for some things. These barely last a week. Skip these and go energizer. Then i find out they are not returnable.

Ray-o-vac's are king. I buy rayovac instead of other brands as these seem to last just as long.

The light is super bright. I dropped them into a maglite 3cell led and they work as expected. We have a set of three led flameless candles that use c cell batteries. The candles sit on our lanai all year.