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Fenix ARB-L16-800UP - 16340 USB battery 800mAh

🔋 Powerful Li-ion battery with 800 mAh capacity
🔌 Directly rechargeable via USB-C – no separate charger required
💡 Integrated LED charging indicator (red = charging, blue = full)
🔒 Multiple protection against overcharging, deep discharge, short circuit, and overheating
🛡 Robust steel housing – impact-resistant and safe for outdoor use
🔄 Long service life – up to 500 charging cycles with high capacity stability
🎒 Compact design – ideal for headlamps and flashlights (16340 compatible)
✅ Compatible with Fenix E18R V2.0, PD25R, HM50R V2.0, and many more.


12.95 CHF
incl. 8,1% VAT , plus Shipping (Paket)
Available immediately
Deliverydate: 13.10.2026 - 15.10.2026
pcs.
Description

Fenix 16340 USB Li-ion battery ARB-L16-800UP – Your reliable energy partner for on the go

Imagine this: you are on a multi-day trekking tour in the Alps. Your headlamp is an indispensable companion in the dark. But what happens when the battery runs out and there's no power outlet in sight? That's where the Fenix ARB-L16-800UP Li-Ion USB battery comes in – your compact, powerful, and rechargeable power source that won't let you down.

Fenix ARB-L16-800UP battery – compact power with state-of-the-art technology

The Fenix ARB-L16-800UP is a 16340 Li-ion battery with a capacity of 800 mAh and a voltage of 3.6 V. Thanks to the integrated USB-C charging port, you can charge the battery directly and easily – no separate charger is required. Simply connect a USB-C cable and charging begins. The LED display informs you of the charge status: red means charging, blue indicates a fully charged battery.

Safety at the highest level

Safety is a top priority at Fenix. The ARB-L16-800UP has a protective circuit in the positive terminal that prevents short circuits, overcharging, deep discharge, and overheating. In addition, multi-layer protective mechanisms such as a pressure relief valve, microporous protective layers, and PTC cathode protection ensure maximum safety. The robust steel housing provides additional protection against mechanical impact.

Durability and environmental friendliness

With a service life of up to 500 charging cycles, the battery retains its performance even after numerous charging and discharging cycles. Even after 500 cycles, it still has around 70% of its original capacity. This makes it not only cost-efficient but also environmentally friendly, as it reduces the need for disposable batteries.

CAUTION:

  1. Before using the battery, it is essential to check the permissible voltage of the device. The size corresponds to a standard CR123A lithium battery with a voltage of 3 volts, whereas the Fenix ARB-L16-800UP has a voltage of 3.6 volts. Use in unsuitable devices will result in damage to the device. There is also a risk of explosion and fire.
  2. Lithium-ion batteries must be charged with a suitable charger, e.g. the Fenix ARE-D2 charger. This model is equipped with a USB charging port, which allows direct charging via a USB-C cable

Features of the Fenix USB battery ARB-L16-800UP

  • Original 16340 (RCR123A) Fenix battery with 800 mAh
  • high discharge current of max. 1.4A
  • rechargeable via USB-C cable
  • Charge status indicator via built-in LED (red = charging / blue = fully charged)
  • Specially designed for high-performance flashlights
  • High quality and reliable
  • Integrated protection circuit against overvoltage and undervoltage
  • Replaces a CR123A lithium battery in suitable devices (check voltage)
  • No memory effect
  • approx. 500 charging cycles
  • very low self-discharge

Technical data at a glance

  • Brand: Fenix
  • Model: ARB-L16-800UP
  • Type: Li-ion battery
  • Battery size: 16340 (RCR123A)
  • Capacity: 800 mAh
  • Voltage: 3.6 V
  • Discharge current: max. 1.4A
  • Energy: 2.88Wh
  • Chargingconnection: USB-C (integrated)
  • Charging current: 0.5 A (USB), 0.6 A (external charger)
  • Charging time: approx. 2 hours
  • Dimensions: 35 mm × 16.7 mm
  • Weight: 18.5 g
  • Protective mechanisms: Overcharging, deep discharge, short circuit, overheating
  • Service life: Up to 500 charging cycles

Scope

  • 1 Fenix 16340 Li-Ion battery ARB-L16-800UP

The Fenix ARB-L16-800UP – Reliable power when you need it most

Whether on expeditions, camping, or in everyday life, the Fenix ARB-L16-800UP Li-Ion USB battery provides you with a reliable and safe power source for your compatible devices. With its compact design, easy USB-C charging, and comprehensive protection features, it is the ideal companion for anyone who values quality and safety.

Now available at Swiss-Sale.ch – your expert for high-quality outdoor equipment.

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