FAQ /

Don't Stay in the Dark

Flashlights

  • First install fresh batteries, positive-end forward. 95% of non-working SureFire flashlights are due to dead or reversed batteries.
  • If the flashlight does not turn on with fresh batteries installed, perform the "paper clip test" as follows: 1. With the new batteries still in the light, unscrew and remove the tailcap. 2. Using a metal object such as a paper clip or key, simultaneously touch the flat center of the exposed battery terminal and the rear metal rim of the flashlight; the flashlight should turn on.
  • If the flashlight does not turn on using the paper clip test with fresh batteries installed, the problem may be dirty or greasy tailcap threads. Refer to the question below, "What parts of my flashlight need to be maintained?", paying attention to the information on cleaning.
  • If the flashlight does turn on using the paper clip test with fresh batteries installed but it does not turn on with the tailcap installed, the problem may be dirty or greasy tailcap threads. Refer to the question below, "What parts of my flashlight need to be maintained?", paying attention to the information on cleaning.
  • If the flashlight does not turn on after cleaning the threads, it may be the tailcap switch, although failures of our simple "tactical" switches are extremely rare. At this point, please call SureFire at 1-800-828-8809 and ask for Customer Service.
  • If the flashlight does not turn on after cleaning the threads, it may be the tailcap switch, although failures of our simple "tactical" switches are extremely rare. At this point, please call SureFire at 1-800-828-8809 and ask for Customer Service.
  • This is almost always caused by the batteries being nearly depleted. Replace the batteries.
  • By design,when the batteries are nearly depleted only the low-output setting works. This serves as a warning while still leaving you with usable light. Replace the batteries.
  • The heads of some SureFire flashlights and WeaponLights are fixed in place and are not meant to be removed. If the head of your illumination tool cannot be unscrewed with moderate hands-only effort, then it is not meant to be removed.
  • Removing or attempting to remove a fixed illumination tool head will VOID YOUR WARRANTY. If you have any questions about your illumination tool, call SureFire Customer Support at 1-800-828-8809.
  • Clean threads of tailcap and head using cloth, paper towel, or similar absorbent material.
  • Clean flat surface at end of threaded section and corresponding area inside the tailcap to ensure positive electrical contact between tailcap, head, and body.
  • Remove dirt or debris from O-rings and use a cotton swab or similar to lightly coat them with silicone grease, such as Nyogel or SCUBA equipment grease.
  • NOTE: Grease only the O-rings, not the threads. Do not use spray lubricants. Do not use petroleum-based lubricants. Do not use acidic, alkaline, or petroleum solvents to clean any part of your light.
  • First make sure your flashlight is functioning. Then unscrew the tailcap until the light will not turn on when you press the tailcap switch, or when you wiggle the tailcap from side to side.
    If the flashlight does not turn on, the tailcap switch is locked out. You may wish to unscrew the tailcap another ¾ turn to be absolutely certain it's locked out. If your tailcap has a small "scoop" mark in the rim, use this for future reference to determine how much the tailcap should be unscrewed to lock out the switch.
  • NOTE: After locking out your flashlight, always push the tailcap switch to make sure it is truly locked out.
  • No. Pocket clips will only fit flashlight models that originally come with them since they require a special slot for attachment.
  • Remove the deposits using a clean, dry pencil eraser, rubbing in a circular motion.
  • Remove the head of the flashlight to access and replace the batteries.

Headlamps

  • First install fresh batteries, positive-end forward. 95% of non-working SureFire lights are due to dead or reversed batteries.
  • If the headlamp does not work with new batteries, perform the "paper clip test" as follows: 1. With the fresh batteries installed, unscrew and remove the battery compartment cap. 2. Using a metal object such as a paper clip or key, simultaneously touch the flat center of the exposed battery terminal and the rear metal rim of the battery compartment. NOTE: The headlamp's output control knob must be turned to any ON position for the test to work.
  • If the headlamp still does not turn on using the paper clip test with fresh batteries installed, the problem may be dirty or greasy battery compartment and cap threads. Refer to the question below, "What parts of my headlamp need to be maintained?", paying attention to the information on cleaning.
  • If the headlamp does not turn on after cleaning the threads, it may be the switch, although failures are extremely rare. At this point, please call SureFire at 1-800-828-8809 and ask for Customer Service.
  • By design,when the batteries are nearly depleted the headlamp will blink or flicker and the headlamp will only run at the low-output level. This serves as a warning while still leaving you with usable light. Replace the batteries.
  • Clean threads of battery compartment and cap using cloth, paper towel, or similar absorbent material.
  • Clean flat surface at end of battery compartment threaded section and corresponding area inside the cap to ensure positive electrical contact between tailcap, head, and body.
  • Remove dirt or debris from O-rings and use a cotton swab or similar to lightly coat them with silicone grease, such as Nyogel or SCUBA equipment grease.
  • NOTE: Grease only the O-rings, not the threads. Do not use spray lubricants. Do not use petroleum-based lubricants. Do not use acidic, alkaline, or petroleum solvents to clean any part of your light.

WeaponLights

  • First install fresh batteries, positive-end forward. 95% of non-working SureFire illumination tools are due to dead or reversed batteries.
  • If the WeaponLight still does not turn on with fresh batteries installed, the problem may be dirty or greasy battery compartment threads. Refer to the question below, "What parts of my WeaponLight need to be maintained?", paying attention to the information on cleaning.
  • If the WeaponLight does not turn on after cleaning the threads, it may be the switch, although failures are extremely rare. At this point, please call SureFire at 1-800-828-8809 and ask for Customer Service.
  • Clean mating threads of battery compartment, including flat sections at end, using cloth, paper towel, or similar absorbent material.
  • Remove dirt or debris from O-rings and use a cotton swab or similar to lightly coat them with silicone grease, such as Nyogel or SCUBA equipment grease.
  • NOTE: Grease only the O-rings, not the threads. Do not use spray lubricants. Do not use petroleum-based lubricants. Do not use acidic, alkaline, or petroleum solvents to clean any part of your light.
  • Remove the deposits using a clean, dry pencil eraser, rubbing in a circular motion.

Batteries

  • No! Do not try to recharge them, as this can be dangerous.
  • No! Many counterfeit or inferior lithium batteries don't have the power output characteristics or built-in fault (short-circuit) protection that SureFire batteries have. This can cause poor performance or even be dangerous to you and your SureFire illumination tools.
  • Using genuine Panasonic®, Duracell® or Energizer® batteries will not void your warranty, but using any other non-SureFire brand will void it.
  • Buy SureFire brand batteries from www.surefire.com, or from an authorized SureFire dealer.
  • Remove the head of the flashlight to access and replace the batteries.
  • The discharge power is very similar, which means that your illumination tool will have similar lumen output. However, rechargeable batteries will be depleted in about half the time of the disposable batteries.
  • Shelf life is several years when the batteries are stored away from high temperature conditions, but they should be recharged after 2 years of sitting idle.
  • Yes. They must be inserted into an included battery magazine, which is then inserted into the flashlight.
  • No.
  • Avoid doing this. There is no safety hazard, but it is possible that the charged cell could damage the discharged cell. We recommend fully charging all cells before placing them into an illumination tool.
  • Yes. However, the runtime of your illumination tool may be reduced.
  • We do not recommend it because the slightly higher initial voltage of charged LFP 123A batteries may burn out lamp filaments. Use our rechargeable batteries only with LED illumination tools that also use disposable 123A batteries.
  • Nothing. The battery magazine is designed so that it does not allow an electrical connection with the charger when the latter is plugged into the flashlight.
  • The light is red when the battery (or batteries) is taking a charge. It turns green when the charging process is complete.

About SureFire

  • Many SureFire products are completely made in the USA. Some are almost completely made in the USA, but have imported components