Energizer 123 (CR123) 3V Lithium Battery

Tucked a couple of these away in my emergency kit; it's a relief knowing they'll hold a charge for a full decade. My flashlight powered up instantly after sitting unused for months.

Grabbed these for my trail camera and they've outlasted the alkalines I used to run by a long shot. The 10-year shelf life sold me since I only need a couple at a time.

My wireless security sensors were eating through batteries every few months, so I switched to these and they've been running strong for over a year now. The 10-year storage life is why I bought a bulk pack, since I can keep spares in a drawer without worrying they'll be dead when I need them. Solid