Fenix 18650 Battery 3400mAh

$34.99

The Fenix ARB-L18-3400 is a high-capacity 18650 lithium-ion battery, rated at 3400mAh. It gives longer runtimes than the 2600mAh cell, and it is the same battery that ships with some of our Fenix lights. Keep one charged as a spare, or use it to replace a worn original.

More capacity than the 2600mAh option, so more time between charges.
Protection circuitry guards against short circuits and overheating.
Pressure vents add a safety margin.
Rechargeable, so it replaces disposable CR123A cells.

Model: ARB-L18-3400
Battery type: 18650 lithium-ion, rechargeable
Capacity: 3400mAh
Voltage: 3.6V
Charging current: 1A recommended, 2A maximum
Cycle life: 500 cycles to at least 75% capacity
Weight: 50g
Size: 69mm long, 18.6mm diameter
Warranty: 12 months from date of purchase

Spare battery for 18650 Fenix lights
Long outings where runtime matters
Replacing a worn original cell

Less suited to: charging on the go. This cell has no USB port, so it needs a separate charger. For a cell you can charge from a cable, look at the 2600mAh USB battery in our Fenix Lighting range.

Runtime is the whole point of a bigger cell. The 3400mAh is the one that comes with a few of the Fenix lights we stock, so a second one means you can swap and keep going.

Fenix 18650 Battery 3400mAh

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