Which battery is better for extremely cold weather: 18650 lithium-ion batteries or CR123A lithium batteries?

CR123A batteries perform better in extreme cold and extreme heat than 18650 lithium ion batteries. However, 18650 batteries will still work in extreme temperatures in a range of -4ºF to 140ºF. CR123A batteries are able to operate in temperatures between -40ºF to 158ºF. Learn more about the different flashlight batteries

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