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Fenix TK22UE Troubleshooting StepsUpdated 2 years ago

These troubleshooting tips will work for the Fenix TK22UE.

  • Confirm that your batteries are good. Try using the battery in another device.
  • Confirm that the battery/batteries are inserted into the light facing the correct direction. The Positive (+) side should be toward the head (LED) of the flashlight.
  • Confirm that there is only one o-ring on the light. The o-ring that comes in the box is a spare. The light already has an o-ring on it when you first remove it from the box. If you put on the spare o-ring, please remove it as this will prevent the light from making a full connection with the batteries.
  • Lubricate the o-ring using a small amount of petroleum jelly on the end of a cotton swab.
  • Confirm that the head and the tail cap pieces are on the correct sides. The tail cap should be on the side where the pocket clip connects. If you put the light in your pocket with the pocket clip the LED would face down.
  • Perform troubleshooting as suggested on our general "Troubleshooting Your Flashlight" page.
  • If using the battery adapter - the ALF-18 - confirm that the positive side of the 18650 battery is facing the positive side of the battery adapter. 
  • If using the battery adapter, confirm that the positive side is facing toward the head of the flashlight. 
  • Confirm that you are using a USB-C cord, not a micro USB cord. Try out a different USB-C cord and adapter when charging the battery to confirm that the cord or adapter is not defective. If the indicator on the battery glows red, the battery is charging. If the indicator glows blue, the battery is full.  

After you have completed the above troubleshooting steps, if your light is still not working please click one of the two links below:

  • If you purchased this product directly through Fenix-Store.com, less than a year ago please click here to submit a return. You can find your order number on your account page.
  • If you purchased this product direct through Fenix-Store.com over a year ago, please click here to fill out or Return Authorization form.
  • If you purchased this product from another store or a different Fenix distributor, please click here to fill out our Return Authorization form.
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