Fenix 21700 Rechargeable Li-Ion Battery – 5000 mAh

In stock! Usually ships within 24 hours.
Pickup available at 591 Bernard Avenue

Usually ready in 24 hours

View store information

This 21700 battery from Fenix can handle twice the power of a standard 18650 battery. The additional mAh's allow flashlights like the PD36R and TK22 to have longer run times. What makes this 21700 battery even better is the USB Type-C charging port that is embedded in the cell. You don't have to use a separate charger to charge the battery; it can all be done with a wall adapter and USB Type-C charging cord. It is likely that you already have these in your home since many cellphones use this same type of charging port.



  •   5000mAh Capacity
  •   USB Type-C Charging
  •   500 Charging Cycles
  •   Protection Circuits in Anode


  • Overcharge Protection
  • Over-discharge protection
  • Short Circuit Protection
  • Overheat protection
  •  3 sets of overheating protection
  • Pressure relief valve
  • Microporous
  • PTC Cathodal Block
  •   3.6V
  •  USB Charging - USB-A to USB-C Cable - Single Port Charger 1 Amp/2 Amp at 10 Watts Max
  •  Maximum Output Current 8A
  •  Weight: 2.56 oz / 72.5g
  •  Dimensions: 2.99" Height x 0.85" Diameter

You may also like