Panasonic CR123A Lithium Battery (3V)

My thermal camera has been giving much more reliable readings since I swapped to this 3V lithium cell — the voltage stays steady even after several long hikes in cold weather. No more random shutdowns mid-use.

Installed this in my home alarm system and the voltage hasn't budged in over a week of use. The compact 3V cell is exactly what the sensor needed.

These little cells have never let me down in my flashlight, and the 3V output stays strong right up until the end. I keep a spare in my glovebox for emergencies, and it's been sitting there for two years without losing its charge.