18350
18350’s, by definition, are rechargeable batteries 18mm in diameter and 35mm in length. They are
18650
18650’s, by definition, are rechargeable batteries 18mm in diameter and 65mm in length. They are
Candela
Candela is a measurement of luminous intensity. A light with high candela typically has a
CR123A
Originally used in cameras, CR123 (or CR123A) batteries have been popular in the weapon lights
CR2
CR2 batteries measure 27mm in height and 15.6mm in diameter. They are available both rechargeable
CRI
CRI, or Color Rendering Index, is a measurement of how accurately a light source reproduces
Dual-fuel
Duel-fuel refers to a light which can use both rechargeable and non-rechargeable batteries.
Flood
A “floodlight” is a light with a low candela-to-lumen ratio. This results in a beam
Hotspot
A hotspot is a small, bright point at the center of a beam, if it
Integrating Sphere
An integrating sphere is a tool used to measure the total output of a light
