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What "rechargeable" means on a Fenix light

A rechargeable flashlight runs on a lithium-ion cell you top up instead of disposable alkalines you throw away. On a Fenix light that cell is either sealed inside the body and charged through a built-in port, or a removable cell you can swap for a charged spare. Either way you stop buying batteries, you get brighter sustained output than alkalines can deliver, and the light holds up far better in the cold. The lights below are filtered to exactly the models that charge — the same set you get from the Rechargeable filter on any catalogue page.

Battery types

Most Fenix lights use a single 18650 or 21700 lithium-ion cell; smaller EDC and keychain lights use a 16340 or 14500, and some lanterns and headlamps use a sealed built-in pack. Many models are dual-fuel — they take a rechargeable cell for everyday use and a CR123A or AA primary as an emergency backup. See the full batteries range for spare cells and capacities.

Ways of charging

The common method is onboard USB-C — plug the light straight into a phone charger or power bank, no separate dock. Some lights add a magnetic charging contact, and removable cells can also be topped up in an external bay charger so you can rotate a charged spare. Pick the method that fits how you'll actually keep the light ready.

Charge time & runtime

Charge time depends on the cell's capacity and the charger's output — a small EDC cell fills in about an hour, a high-capacity 21700 can take three or more. Higher output burns the cell faster, so plan around runtime at the brightness you'll really use, not the headline turbo number. Most lights show a charge indicator so you know when they're full.

How to choose

If you want one light you rarely think about, pick a USB-C model with a built-in or single removable cell. If you need guaranteed uptime — emergencies, long shifts, the backcountry — choose a dual-fuel light and carry a charged spare. Our guide on why a rechargeable flashlight is worth it and the battery guide go deeper on chemistry and care.

Frequently asked questions

Are all Fenix flashlights rechargeable?

Almost all current Fenix lights are rechargeable, charging over USB-C, a magnetic contact, or in an external bay charger. A small number of specialty models run only on primary cells; this page lists just the rechargeable ones.

Can I still use regular batteries if the charge runs out?

On many Fenix lights, yes. Dual-fuel models accept a CR123A or AA primary cell as a backup when no charger is available — useful for emergencies and long trips. The product page lists which cells each light accepts.

How long does a rechargeable flashlight take to charge?

It depends on the cell capacity and charger output. A small everyday-carry cell fills in roughly an hour; a high-capacity 21700 cell can take three hours or more. Most Fenix lights show a charge-status indicator so you know when they are full.