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Fenix ARB-L18-4000U Rechargeable Battery

Fenix ARB-L18-4000U Rechargeable Battery - Main image
Fenix ARB-L18-4000U Rechargeable BatteryFenix ARB-L18-4000U Rechargeable BatteryFenix ARB-L18-4000U Rechargeable BatteryFenix ARB-L18-4000U Rechargeable BatteryFenix ARB-L18-4000U Rechargeable Battery
$19.46 $25.95 In stock

Category: batteries chargers

Power up and stay charged with the Fenix ARB-L18-4000U Rechargeable Battery. Enjoy longer-lasting charge with 4000mAh capacity. The built-in USB Type-C port makes charging convenient, without the need for an external charger. With stable 7A output and advanced safety features, like multiple circuit protections and pressure release vents, it's the perfect power source for your high-performance lighting product.

* Please note that this battery is not compatible with the following lights: PD32 V2.0, PD35 V3.0, TK35UE V2.0, UC35 V2.0, HM60R, HM61R V2.0, BC30 V2.0

Click here to see other models of 18650 batteries.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Sophia ★★★★★

Bought this to replace a battery that kept dying mid-hike and the 4000mAh capacity easily got me through a full weekend of camping with my headlamp. The USB-C port means I can top it up right from my power bank instead of hunting for a dedicated charger. A solid upgrade if you're tired of swapping c

Lily ★★★★★

I use a lot of flashlights and this 4000mAh cell keeps my brightest one running through an entire shift without sagging. The built-in USB-C port means I can top it up with the same cable as my phone, which saves me from carrying a dedicated charger. Honestly, it just works.

Evelyn K. ★★★★★

The USB-C port on this battery is a game-changer—no more fumbling with a separate charger, just plug it in and go. I’ve been using it for a few weeks and the 4000mAh capacity easily gets me through a full day of heavy flashlight use. Charging is quick and straightforward, exactly what I needed.

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