Fenix 21700 -5000mAh Battery Type-C USB

$59.99

The Fenix ARB-L21-5000U is a 5000mAh 21700 lithium-ion battery with a built-in USB-C charging port. It is a spare or replacement cell for Fenix lights that take the 21700 size. Note it will not fit 18650 lights or older-style chargers.

  • 5000mAh gives long runtimes from one cell.
  • Charge it from a USB-C cable, no separate charger needed.
  • Red light while charging, blue when full.
  • Protection circuitry and pressure vents built in.
  • Model: ARB-L21-5000U
  • Battery type: 21700 lithium-ion, rechargeable
  • Capacity: 5000mAh
  • Voltage: 3.6V
  • Charging port: USB-C (cable not included)
  • Charging current: 1A recommended, 5A maximum
  • Cycle life: 500 charge cycles
  • Weight: 72.5g
  • Size: 76mm long, 21.5mm diameter
  • Compatible lights: E35 V3.0, HT18, LR35R, LR50R, PD36R, PD36 TAC, PD40R V2.0, TK16 V2.0, TK20R V2.0, TK22 V2.0, TK22 UE, TK30
  • Spare cell for a Fenix 21700 torch
  • Long trips with only a USB-C cable
  • Replacing a tired original battery

Less suited to: 18650 lights. The 21700 is a bigger cell and will not fit them. For that, look at the 18650 batteries in our Fenix Lighting range.

A 21700 is a bigger cell than the 18650, and this one packs 5000mAh with USB-C charging on the cell itself. It is a tidy match for the PD36R V2.0 we stock.