The Fenix ARB-L16-800UP is a high-performance, USB-C rechargeable 16340 lithium-ion battery (3.6V, 800mAh) engineered to power compact tactical flashlights, optics, and high-drain outdoor electronics. High-output compact flashlights require substantial discharge currents, frequently exhausting standard primary CR123A cells and forcing users to carry bulk single-use spares or specialized charging cradles into the field. Fenix solves this logistical friction by embedding a direct USB-C charging port into the battery casing, enabling field replenishment via standard power banks, vehicle ports, or solar chargers without requiring an external cradle.
The battery's internal core yields an 800mAh nominal capacity with a maximum output current of 2.5A, making it ideal for compact illumination gear. Charging is versatile: the cell supports direct USB-C cable charging at 0.5A or conventional external cradle charging at 0.6A. A built-in LED indicator light built into the top terminal illuminates red during the active charge cycle and transitions to blue when maximum capacity is achieved.
Engineered for rigorous field exposure, the ARB-L16-800UP features a multi-tiered anode protection circuit designed to guard against overcharging, over-discharging, short circuits, and thermal overheating. The internal components are encased in a steel-riveted jacket to prevent collision-induced damage, supplemented by micro pressure relief vents that safely release internal gas during high-drain operations. The cell is rated for over 500 charge-discharge cycles while maintaining operational capacity.
Key Benefits
- Direct USB-C Port: Features an onboard USB Type-C charging port for cable replenishment without external cradle chargers.
- Dual-Way Charging Flexibility: Fully compatible with standard USB-C cables (0.5A) as well as traditional standalone bay chargers (0.6A).
- Multi-Tier Protection Circuit: Integrated anode circuit guards against overcharging, over-discharging, short circuits, and thermal spikes.
- Structural Steel Casing: Heavy-duty steel-riveted jacket with pressure relief vents offers enhanced impact resistance and safety.
Technical Specification
- Battery Size: 16340 (RCR123A Equivalent)
- Chemistry: Lithium-ion (Li-ion)
- Nominal Capacity: 800mAh | Nominal Voltage: 3.6V
- Max Output Current: 2.5A
- Charging Currents: 0.5A (USB-C Port) | 0.6A (External Bay Charger)
- Life Cycle Rating: 500+ Charge-Discharge Cycles
- Protection Circuits: Overcharge | Over-discharge | Short Circuit | Overheat Protection
- Charge Indicator: Integrated Red/Blue LED Status Light
- Dimensions / Weight: 1.39" L x 0.63" Dia. (35.5mm x 16mm) | 0.65 oz (18.5g)
- Manufacturer: Fenix
When powering your high-drain compact flashlights and tactical gear in the field, reliable rechargeable power keeps you operational. Eliminate dead battery anxiety and gear up with the Fenix ARB-L16-800UP USB-C Rechargeable 16340 Battery—available now at SMKW.
