By Battery Type
Shop for flashlights based on the type of battery that they use. From compact AAA to powerful 21700 cells, find a flashlight for whatever batteries you like to use. Don't let darkness catch you unprepared. Power up with dependable energy solutions today. Not sure which size fits your device? Our flashlight battery guide explains 18650, 21700, CR123A, and every other common size, and our Knowledge Hub lithium-ion battery safety guide covers safe charging and storage. If you're deciding between the two most common rechargeable sizes, see 21700 vs. 18650 batteries compared, or read the complete guide to 18650 batteries and chargers for more depth on that format specifically.