The Fenix ARB-L18-3400 is a high-performance 18650 Li-ion rechargeable battery with a 3400mAh capacity, offering extended runtime and reliable power for high-drain devices like flashlights, vaporizers, and other portable electronics.
Built with cutting-edge technology, the ARB-L18-3400 comes equipped with advanced protection circuitry embedded in the anode, providing vital safeguards against short circuits, overcharging, overdischarging, and overheating. This protective feature enhances the overall safety of your devices, preventing damage to both the battery and the device it powers, even under extreme conditions.
Safety Features for Peace of Mind: The Fenix ARB-L18-3400 is engineered with an additional layer of protection in the form of pressure relief vents. These vents are designed to expel waste gases in the unlikely event of an internal short circuit, preventing the risk of a catastrophic failure or explosion. This makes the ARB-L18-3400 one of the safest rechargeable 18650 batteries on the market, providing peace of mind for users in demanding environments.
The battery is built for longevity, offering an impressive 500 charge cycles, which means you can rely on it for years of consistent use. Whether you’re using it in high-output devices or for everyday applications, this battery’s long-lasting performance ensures that your device stays powered when you need it most.
Features:
- High Capacity: 3400mAh for extended runtime in your devices.
- Advanced Protection Circuit: Safeguards against short circuits, overcharge/discharge, and overheating to enhance battery longevity and user safety.
- Pressure Relief Vents: In the rare event of an internal short circuit, these vents expel waste gases to prevent potential explosions.
- Long Lifespan: Capable of up to 500 charge cycles, ensuring prolonged reliability.
- Voltage: 3.6V for stable and consistent power output.
- Charging Current: Recommended 1A, with a maximum of 2A for efficient and safe recharging.
- Lightweight & Compact: Weighs only 1.8 ounces (50g) and measures 2.7″ (69mm) in length with a diameter of 0.7″ (18.6mm), making it easy to integrate into various devices.
Specifications:
- Model: ARB-L18-3400
- Capacity: 3400mAh
- Voltage: 3.6V
- Charging Current: 1A (recommended), 2A (maximum)
- Weight: 1.8 ounces (50g)
- Size: Length: 2.7″ (69mm), Diameter: 0.7″ (18.6mm)

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Fenix ARB-L18-3400 (3400MAH 18650 Battery) 












