The Fenix ARB-L16-800UP is a premium 16340 rechargeable Li-ion battery designed to provide reliable, high-performance power for compatible Fenix flashlights and other devices that support protected 16340 batteries. With a capacity of 800mAh and a nominal voltage of 3.6V, it delivers dependable energy for everyday and professional use.
Featuring a built-in USB Type-C charging port, the ARB-L16-800UP can be recharged directly without the need for a separate battery charger, making it an ideal solution for users who value convenience at home, in the office, or while travelling. It also remains fully compatible with compatible external Li-ion battery chargers.
Engineered with multiple built-in safety protections, the battery safeguards against overcharging, over-discharging, short circuits, and overcurrent, helping to maximise both safety and battery lifespan. Its compact 16340 form factor makes it suitable for a wide range of compatible flashlights and electronic devices.
Manufactured to Fenix’s high-quality standards, the ARB-L16-800UP offers dependable performance, convenient USB-C charging, and long-lasting rechargeable power for demanding applications.
Key Features
Premium rechargeable 16340 Li-ion battery
800mAh high-capacity rechargeable battery
3.6V nominal voltage
Built-in USB Type-C charging port
Convenient direct USB-C charging without a separate charger
Compatible with many external Li-ion battery chargers
Multiple built-in safety protection circuits
Protection against overcharging
Protection against over-discharging
Short-circuit protection
Overcurrent protection
Stable, reliable power output
Designed for compatible Fenix flashlights and other compatible 16340-powered devices
Lightweight and compact design
Specifications
Battery Type Protected 16340 Rechargeable Li-ion
Model Fenix ARB-L16-800UP
Capacity 800mAh
Nominal Voltage 3.6V
USB Charging Current 0.5A
Charger Charging Current 0.6A
Charging Port USB Type-C
Diameter 16.7 mm
Height 35 mm
Weight 18.5 g






















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