16340 batteries are compact lithium-ion rechargeable cells designed for applications requiring reliable output and consistent performance in a smaller form factor. These batteries are commonly used in flashlights, portable electronics, and specialty devices designed for lithium-ion operation.
With a nominal voltage of 3.6V to 3.7V, 16340 batteries deliver higher output than lower-voltage battery chemistries and are intended for use only in devices designed to support lithium-ion cells.