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Fenix

Fenix ARB-L18-3500 Rechargeable 18650 Battery

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Fenix Rechargeable

3500mAh high capacity

Built-in Over-charge

Protection for safer charging

Includes Over-discharge

Protection to help protect the

Short-circuit Protection

Circuitry is built in

Overheating Protection

Adds another layer of safety

$24.95
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SKU: WX2*0737111

Overview

Built for hunters and outdoorsmen who rely on rechargeable power in the field, this 18650 battery is designed to keep compatible gear running with a 3500mAh capacity. Its protection circuitry addresses over-charge, over-discharge, short-circuit, and overheating concerns, while pressure vents are included to release waste gas in the event of an internal short circuit. With a stated 500 charge cycles, it offers a practical option for repeated use in flashlights and other equipment that accept this battery format.

Why Hunters Choose the Fenix

3500mah Capacity

Supports extended use between charges

Built-in Over-charge

Protection helps safeguard the battery

Over-discharge Protection

Adds another layer of battery

Short-circuit Overheating

Protection are included

Pressure Vents

Are designed to release waste

Key Features

  • Fenix rechargeable 18650 battery with 3500mAh high capacity
  • Built-in over-charge protection for safer charging
  • Includes over-discharge protection to help protect the battery
  • Short-circuit protection circuitry is built in
  • Overheating protection adds another layer of safety
  • Pressure vents expel waste gas during an internal short circuit
  • Rated for up to 500 charge cycles

Best Used For

  • Hunters using compatible gear that benefits from a rechargeable 18650 power source
  • Users who want built-in protection features for charging and storage peace of mind
  • Field kits needing a 3500mAh battery for lights, optics, or other electronics
  • Outdoor enthusiasts replacing disposable cells with a rechargeable option for repeated use
  • Prepared users looking for a battery rated for up to 500 charge cycles

Specifications

Battery Type18650
Capacity3500mAh
Charge Cycles500
Explosion PreventionYes
Over Charge ProtectionYes
Over Discharge ProtectionYes
Overheating ProtectionYes
Pressure VentsYes
Protection CircuitryYes
RechargeableYes
Short Circuit ProtectionYes

Pros

  • 3500mAh capacity supports extended use between charges.
  • Built-in over-charge protection helps safeguard the battery.
  • Over-discharge protection adds another layer of battery protection.
  • Short-circuit and overheating protection are included.
  • Pressure vents are designed to release waste gas during an internal short circuit.
  • Rated for up to 500 charge cycles.

Considerations & Trade-offs

  • Requires a compatible 18650-powered device; it is not a universal battery for all gear.
  • The 500 charge-cycle specification means it is a consumable item that will eventually need replacement with regular use.
  • Protection circuitry and pressure vents add safety features, but they also make this a more specialized battery than a basic unprotected cell.
  • As a rechargeable battery, it involves periodic charging and planning ahead for power management in the field.

Suggested Comparisons

  • Flashlights and headlamps
  • Portable power and battery accessories
  • Rechargeable lithium-ion batteries
  • Battery chargers

Suggested Accessories

  • 18650 battery charger
  • Battery storage case
  • Spare rechargeable battery
  • Portable power bank

Frequently Asked Questions

What type of battery is the Fenix ARB-L18-3500?

It is a rechargeable 18650 battery.

What capacity does this battery have?

The listed capacity is 3500mAh.

What protection features are included?

The product data lists over-charge protection, over-discharge protection, short-circuit protection, and overheating protection.

Does this battery include any safety venting feature?

Yes. The description says pressure vents expel waste gas in the case of an internal short circuit to help prevent explosion.

How many charge cycles is it rated for?

The product data lists 500 charge cycles.