AAAA batteries are the perfect vehicle for small, handy, and easy-to-take-everywhere flashlights that require a slim battery that will provide power and stability at all times. The most common AAAA flashlights are penlights primarily because of the slim build of the AAAA battery. Penlights come in a variety of different colors and can also double as a stylus for tablets and phones. Not to mention, penlights can be used anywhere, from out in the field on a mission to in the classroom. At BatteryJunction, not only do we offer these niche AAAA flashlights, but we offer them at our discounted price that is only available here.