Fenix ARB-L18-3400 18650 Rechargeable Battery – Reliable Power for Every Adventure

Keep your headlamp or torch performing at its best with the Fenix ARB-L18-3400 18650 Rechargeable Battery. Delivering 3400mAh of high-capacity lithium-ion power, this premium rechargeable battery is designed for dependable performance during trail running, hiking, camping, search and rescue, and outdoor adventures.

Built with a protected button-top design, the ARB-L18-3400 is compatible with most devices that use protected 18650 batteries, including a wide range of Fenix headlamps and flashlights.

Safety is a key feature of every Fenix battery. The integrated protection circuit, built into the anode, safeguards against overcharging, over-discharging, overheating, and short circuits. A durable steel shell provides additional protection against impacts and accidental damage, helping eliminate the risk of short circuits caused by collisions or harsh outdoor use.

With an impressive lifespan of up to 500 recharge cycles, the ARB-L18-3400 offers excellent long-term value while reducing waste compared to disposable batteries. Weighing just 50 grams, it provides dependable, lightweight power for everything from overnight trail races to extended backcountry adventures.

Whether you're carrying a spare battery for race day or replacing an ageing power cell, the Fenix ARB-L18-3400 ensures your lighting equipment is ready whenever you need it.

Price is for one battery.

Key Features

• High-capacity 3400mAh lithium-ion battery
• Protected 18650 button-top design
• Built-in protection circuit
• Short circuit protection
• Overcharge protection
• Over-discharge protection
• Multiple safety protection features
• Durable steel shell construction
• Up to 500 recharge cycles
• Lightweight design (50g)
• Compatible with most protected 18650-powered Fenix torches and headlamps

Technical Specifications

• Battery Type: 18650 Li-ion Rechargeable
• Capacity: 3400mAh
• Weight: 50g
• Recharge Cycles: Up to 500
• Protection: Integrated protection circuit
• Design: Protected Button Top

Best For

• Trail running
• Ultra marathons
• Hiking
• Camping
• Fastpacking
• Adventure racing
• Emergency backup power
• Fenix headlamps and flashlights

Why Choose the Fenix ARB-L18-3400?

Choose the ARB-L18-3400 if you want:

• Reliable, high-capacity power for long adventures
• Enhanced safety with built-in battery protection
• A long-lasting rechargeable battery with up to 500 cycles
• Lightweight backup power for your race or hiking kit
• Premium performance from one of the world's leading lighting brands

Whether you're running through the night or exploring remote trails, the ARB-L18-3400 helps ensure your lighting stays powered when it matters most.

Why Tribe&Trail?

At Tribe&Trail, we know dependable lighting is only as good as the battery powering it. That's why we stock genuine Fenix batteries and accessories, giving you confidence when you're training before sunrise, racing overnight, or exploring after dark.

When you shop with Tribe&Trail, you get:

• Expert advice from experienced trail runners and hikers
• Genuine Fenix products
• Fast Australian shipping
• A carefully curated range of premium lighting equipment and accessories
• Support from Western Australia's dedicated trail running specialists

Whether you're preparing for an overnight ultra or your next camping adventure, Tribe&Trail has the gear to keep you powered for longer.

Reliable power. Trusted performance. Adventure without limits — with Fenix and Tribe&Trail.