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Great Backup Batteries for Tactical Flashlights
Many high quality tactical flashlights on the market today use lithium-ion batteries, typically 18650 batteries or 21700 batteries. These batteries provide a lot of power and energy, giving the user higher output and long run times. However, there are some downsides to lithium-ion batteries which is why these batteries are not always a user favorite. Lithium-ion batteries drain slowly over time even when they're not in use. This requires the need to charge the battery every couple months or so. They are also pricier than other batteries and can be a little difficult to find. Not to mention, lithium-ion batteries don't typically work well in the cold which may limit the use of them.
For all the reasons listed above, many users prefer CR123 lithium batteries. CR123 batteries are also more powerful than AA batteries. Many CR123 batteries can last three to five times longer than an alkaline battery. Not to mention, alkaline batteries are more likely to leak so you can see why CR123 batteries may be preferable.
Many 18650 flashlights can also run on CR123 batteries. Flashlight users may prefer using an 18650 flashlight, while carrying CR123 batteries as backup. Due to their small size and how inexpensive they are, they're easy to carry around making them perfect backup batteries. Not to mention, CR123 batteries still provide a great deal of power and give you those longer run times.
CR123 Cold-Resistant Batteries
Lithium batteries are non-rechargeable, have a decent shelf life, and are extremely cold resistant. For this reason, they make excellent power sources for outdoor adventurers who may be going into a colder climate. Unlike lithium-ion batteries which don't handle the cold very well, CR123 batteries can operate in temperatures as low as -20 degrees Celsius or -4 degrees Fahrenheit.
CR123 batteries are used for more than LED flashlights, lanterns, and headlamps. Many cameras, smoke detectors, home automation devices, and tactical equipment use CR123 batteries. Being excellent power sources, more and more electronic devices are using CR123 batteries.
Best Batteries for Emergency Flashlights
CR123 batteries work in a myriad of different LED lights from handheld flashlights to camping lanterns. Given the fact that they are less likely to leak like alkaline batteries and won't drain overtime the way lithium-ion batteries do, CR123 batteries make excellent power sources for emergency lights. They are reliable in a pinch and have long run times, just what you’d want for any emergency flashlight. Many users like having a CR123-powered flashlight in their bug out bag or emergency kit.
For the same reason, CR123 batteries are perfect for survival flashlights, especially if you live in a colder climate. With a CR123 battery, you can expect good run times even in the cold from your flashlight, lantern, or headlamp. So if you're looking for a powerful flashlight that runs on CR123 batteries, this section is filled with Fenix lights for you.