Known for being cold-resistant, CR123 lithium batteries are often used for tactical flashlights, pocket flashlights, LED headlamps, and lanterns to name a few. More powerful than AA batteries, CR123 batteries provide longer run times and more power for LED lights. Because of their small size, these lithium batteries are easy to pack for any outdoor adventure. CR123 batteries are popular with mountain climbers and other outdoor enthusiasts due to their cold resistance. Being small and inexpensive, CR123 batteries make excellent power sources. Fenix offers a variety of LED lights ranging in output, functionality, size and more, all able to run on CR123 batteries. Peruse this section to find the perfect Fenix CR123 flashlight to meet any needs.