Common LED Flashlight Issues

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We’ve all been there. You reach for your flashlight needing it to see and the flashlight doesn’t turn on or flickers or acts up in some way. Though it’s not super common, it doesn’t make it any less frustrating. While many high quality flashlights come with great warranties, there are a few things you can do to try fix the issue. This is what we’ll be covering today on our blog. We’ll discuss a few common issues and how you may be able to fix the problem.



My Flashlight Will Not Turn On


Your light was working fine yesterday, but now it won’t turn on. No response whatsoever. Or perhaps you try to turn it on but it flickers or turns on and immediately turns back off. Maybe you’re unable to cycle through the brightness levels. If one of these sounds familiar, try out the steps below to see if they help.


  1. Check to make sure the head or tail of your flashlight is fully tightened. For some lights, if you don’t tighten the flashlight fully, they won’t work or won’t work correctly.
  2. If your flashlight has a lockout function, make sure it’s not activated. Depending on the light, you can accidentally lock out the switch without even realizing it. Double-check to make sure your flashlight isn’t locked out.
  3. Make sure the contact points are clean. For most flashlights, this will be a spring or piece of metal. If dust or debris is caught in the contacts then the flashlight may not work properly.
  4. Try out a different battery. A good portion of the time, the battery is having issues rather than the flashlight. If you have a spare battery, try out your spare in your flashlight. Also, if you have another flashlight that uses the same battery, try out the possibly faulty battery in the other flashlight to see if it works. This can help confirm if the fault lies within the battery or flashlight.



My Flashlight Only Functions in Low or Strobe


We don’t see this issue too often, but when we do, it’s typically an easy fix.


  1. Double-check to see if your LED flashlight features different modes. Certain flashlights have different modes or settings that change how the flashlight operates. For example, on the XT11GT, it has a setting where you can only use the turbo and strobe mode while the side switch is locked out. In other flashlights, they may have a mode that only accesses high or low. So check your user’s manual to see if this is the case. If it is, follow the manual to put the flashlight back in the mode you prefer.
  2. Check the battery. When a flashlight is only working in low mode, this could be a sign that your battery is low on energy and can’t produce more light. Try recharging your battery to see if this fixes the issue. If you have a non-rechargeable battery, replace it with a fresh one.
  3. If recharging the battery doesn’t work, try a new battery. It’s possible the battery is defective and a new battery will fix the issue.
  4. If your flashlight has a tail switch and cap, it’s possible that the switch is loose. Try tightening the tail switch to see if it fixes this issue. You can find steps for how to tighten the tail switch here.



My Rechargeable Flashlight Won’t Charge


This may be the most common issue we see with rechargeable flashlights. You go to plug the flashlight in and it doesn’t appear to be charging. For most of the cases we see, the flashlight is usually not the culprit of the issue. Try these steps below to see if there’s an easy way to fix the problem.


  1. More often than not, we find that there’s an issue with either the wall adapter, charge cord, or wall outlet. We recommend trying out a different wall outlet, a different wall adapter, and a different charge cord. See if this fixes the issue.
  2. Sometimes dust or debris can get in and around the adapter on the flashlight. Most micro-USB and USB-C ports will have a silicone cover to prevent dust from getting in, but sometimes we can forget to seal the cover, and dust or dirt can sneak inside. Try blowing inside the port to remove
  3. Finally, try out a new battery to see if this fixes the issue. More often than not, we’ll find a defective battery before we find a defective flashlight so it’s always important to try out a new battery regardless of what the issue you’re experiencing is.



LED Flashlight Warranty


If none of the steps above work to fix your flashlight, then it might be time to move onto warranty. Most flashlight brands offer pretty good warranties. For example, Klarus offers a 5 year warranty on the flashlight and a 1 year warranty on any of their batteries and chargers. The warranty covers any manufacturer’s defects.


We recommend you keep any proof of purchase and register your light if the manufacturer offers that. With proof of purchase, you’ll find that warranty will go more smoothly.



Maintaining an LED Flashlight


It’s also a good idea to maintain your light so that way your light will always work at its best. Here are a few things to keep in mind with your LED flashlight.


  1. Keep the threads lubed. If you open the tail cap or head of your flashlight and find that it’s no longer slick and easy to twist off, it might be time for more lube. You can purchase flashlight lubrication or you can use Vaseline. Apply a very thin amount to the threads using a q-tip. If you apply too much, this may affect the contact so always start off with a very small amount. The lube will help prevent your threads from wearing down.
  2. Clean your flashlight. If your flashlight gets dirty, we recommend cleaning it. We’ve had flashlights sent to us before for warranty where the lights have been covered with dirt. We found dirt in the threads and in the tube of the light which can affect the contacts. We’ve also seen dirt and grime get into micro USB ports. So take care of your flashlight when it’s dirty and clean it up with a damp cloth.
  3. Maintain the battery. Many LED flashlights use lithium-ion batteries which drain slowly over time even when not in use. Keep your battery topped off by charging it once a month or once every other month. Check for any signs of corrosion or swelling in the battery whenever you remove it.
  4. If you plan on putting your flashlight away for a few days or more without using it, remove the batteries. Some flashlights have a parasitic drain, meaning they drain the battery when the light isn’t on. Not only that, but batteries, especially Alkaline, have a chance of leaking. If a battery leaks inside a flashlight, it can cause irreparable damage. Also, many manufacturers won’t cover this damage under their warranty because it is not a manufacturer defect. So taking care of your batteries is especially important.


Hopefully, these tips help you to get the best life out of your LED flashlight!

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Common LED Flashlight Issues is written by customerservice@flashlightz.com for www.flashlightz.com

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