Fenix ARB-L18-2900 (2900mAh 18650 Battery)
The Fenix ARB-L18-2900 rechargeable battery embodies Fenix Lighting’s two decades of expertise in crafting rugged, reliable portable power solutions. Since 2001, Fenix has equipped adventurers, professionals, and everyday explorers with high-performance lighting and power accessories designed to thrive in the most challenging environments—from mountain summits and remote campsites to industrial worksites and tactical operations.
Experience uninterrupted performance on long treks, late-night patrols, or critical work shifts. With its high 2900 mAh capacity, the ARB-L18-2900 keeps your 18650-compatible flashlights, headlamps, and gear powered for hours. Built-in protection circuitry guards against short circuits, overcharge, and deep discharge, so you can charge and discharge with confidence. Pressure-relief vents add another layer of defense, preventing dangerous pressure build-up and potential battery failure.
Engineered for extreme conditions, the ARB-L18-2900 thrives in temperatures from –20 °C to 60 °C and endures shocks, vibration, and moisture with ease. Whether you’re scaling icy peaks, navigating dusty deserts, or patrolling rainy terrain, this battery delivers consistent power without fail. Pair it with Fenix’s high-efficiency chargers to slash recharge times, or carry spare cells in your pack for instant swaps on the trail. Its universal 18650 form factor makes it a versatile upgrade for flashlights, bike lights, headlamps, and other EDC gear.
Backed by Fenix’s membership in OIA, EOG, PLATO, and NSSF, every ARB-L18-2900 meets rigorous industry standards for safety and performance. Sold in more than 100 countries and trusted by military, law enforcement, industrial professionals, and outdoor enthusiasts alike, this battery stands out as an essential power source wherever reliability is mission-critical.
Crafted to Fenix’s exacting standards, this Li-ion cell delivers a steady 3.6 V output even under demanding loads. Its robust construction supports up to 500 charge/discharge cycles—translating to years of dependable service, lower replacement costs, and less environmental impact. The compact size and lightweight design make it easy to pack backup power without adding bulk to your kit. Elevate your gear’s performance with the dependable energy you need, wherever your adventure or operation takes you.
Key Features and Specifications
- 2900 mAh high capacity: Extended run time for all-day adventures
- 3.6 V nominal voltage: Consistent power under load
- Integrated protection circuit: Guards against shorts, overcharge, and over-discharge
- Pressure-relief vents: Enhanced safety against internal pressure build-up
- Up to 500 charge cycles: Long-lasting, cost-effective performance
- Recommended 1 A charging: Optimal speed and battery health
- Maximum 2 A charging: Rapid recharge when time is tight
- Compact 69 mm × 18.6 mm size: Fits all standard 18650 devices
- Lightweight 50 g design: Pack-friendly and travel-ready
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