21700-battery Fenix ARB-L21-5000U - 5000 mAh / USB-C rechargeable

The Fenix ​​ARB-L21-5000U is a 21,700 Li-ion battery that is charged directly from the fast USB C charging port on the battery. The battery can also be charged in an external charger (recommended: Fenix ​​ARE-D1, Fenix ​​ARE-D2). ARB-L21-5000U battery capacity (5000 mAh) is double that of a conventional 18650/2300 mAh battery. The battery is safe to use - in addition to a number of protection circuits, it is protected against external impacts by a steel cylinder casing. The Fenix ​​ARB-L21-5000U battery is suitable for use where large capacity and long operating time are required from the battery.

The charge indicator on the battery's anode end (+) clearly shows how the battery is charging (red = charging, blue = ready for use).

ATTENTION! The 21700 battery is not suitable for devices that use an 18650 battery because the physical size of the battery is larger. Only suitable for devices designed for use with 21700 batteries!

Technical specification

• Brand and model: Rechargeable battery Fenix ​​ARB-L21-5000U 21700 USB, 5000 mAh
• Type of battery: 21700 Li-ion
• Nominal voltage: 3.6 V
• Capacity: 5000 mAh
• Charging current: USB charging 2A. Separate charger 1A (recommended), max 5A
• Dimensions: Ø21.5 x 76 mm
• Weight: 72.5 g
• Warranty: 12 months

General safety data sheet

When charging the lithium-ion battery, a charger suitable for the purpose must be used. Do not use with other brands, types or models of batteries! Do not leave the battery in the charger for more than 24 hours and always charge the batteries under supervision!