High-performance 21700 Li-ion battery with power bank function

The Fenix ARB-L21-6000B is a powerful 21700 lithium-ion battery that can be recharged via a standard USB Type-C port. It guarantees a reliable and constant power supply for your devices.

The battery can also be recharged directly in a device or in a suitable charger.

With a high capacity of 6000mAh, it also offers the possibility of recharging other devices.

Reliability and durability

Multiple physical and electronic protections ensure the safety and durability of the battery.

Three battery level indicators provide real-time updates on the status of your battery

After 500 full charge/discharge cycles, the battery retains up to 75% of its initial capacity.

Recommended chargers ARE-D2 ARE-D1 ARE-A2 ARE-A4

Compatible Fenix products: HT18R, HT32, TK16 V2.0, TK20R V2.0, TK17, TK22R, TK30R, WF25RM, CL27R, E35R, LD45R, PD36R Pro, PD36R V2.0, PD40R V3.0, PD45R ACE, etc.

Technical specifications

  • Voltage 3.6 V
  • Capacity 6000 mAh
  • Equipped with a USB Type-C port for charging and discharging
  • Recommended charging current 1.2 A. Maximum 3 A
  • Dimensions 22 x 77 mm
  • Weight 80 g
  • Recharge the battery every 3 months or sooner to maintain maximum battery performance.

Included in packaging

  • ARB-L21-6000B rechargeable Li-ion 21700 battery
  • Fenix USB-C cable