Flashlight & Headlamp Batteries

Flashlight & Headlamp Batteries — Power for the Light Layer

Most modern flashlights and headlamps use rechargeable 18650 or 21700 lithium cells, but emergency-kit lights still rely on AA, AAA, and CR123. SRO carries the battery formats needed across the lighting lineup.

Battery formats by light

21700 (CountyComm/Maratac Molicel 5000) for high-output tactical flashlights. 18650 for most consumer rechargeable lights. AA/AAA for emergency-stockpile lights (long shelf life). CR123 for older tactical lights. See Flashlights and EDC Flashlights.

Pair with the lighting layer

Batteries pair with all lights — pair with Headlamps, Lighting & Power, and Power Bank Accessories.

Keep spare batteries in formats matching your kit lights. Lithium AA/AAA stores for 10+ years without degradation — ideal for emergency-stockpile use.