• 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 silicon 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.

First replace batteries with fresh new SureFire batteries, making sure they are both installed positive-end forward. 95% of non-working SureFire flashlights are due to dead or reversed batteries.

If it still doesn't work with new batteries, perform the "paper clip test" as follows:

• With the new batteries still in the light, unscrew and remove the tailcap or battery compartment cap.
• 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 or battery compartment. NOTE: For Minimus headlamps, the output control know must be turned to any ON position for the test to work.

INCANDESCENT FLASHLIGHT--If the flashlight uses an incandescent lamp and does NOT turn on using new batteries and the paper clip test, replace the lamp and perform the paper clip test again. If the flashlight turns on, the problem was the lamp assembly. If it does NOT turn on, the problem may be dirty or greasy tailcap threads. Refer to the maintenance section above regarding cleaning. If the light 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.

LED FLASHLIGHT OR MINIMUS HEADLAMP--If the LED flashlight or Minimus headlamp does NOT turn on using new batteries and the paper clip test, the problem may be dirty or greasy tailcap or battery compartment threads. Refer to the maintenance section above regarding cleaning. If the light does not turn on after cleaning the threads, it may be the 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.

Either your batteries are too depleted or your main lamp assembly has failed.

The main lamp on the A2 Aviator draws significantly more power than the LEDs. By design, when the batteries are nearly depleted only the LEDs function. This serves as a warning while still providing usable light from the LEDs.

To fix the problem, first try installing fresh batteries. If this doesn't fix the problem, replace your main lamp assembly (model number MA02).

Models with integral LED heads ( LumaMax series, etc.)

• The LED cannot be changed.

Most other models

• Remove the flashlight head by rotating it counterclockwise.
• Remove lamp/reflector assembly and replace it with a recommended assembly.

9AN model

• Remove the flashlight head by rotating it counterclockwise.
• Remove the nylon screw that secures the lamp assembly to the head.
• Replace the inoperative N90 lamp assembly with a new one.
• Secure the lamp assembly to the head with the nylon screw.
• Attach the head to the flashlight body.

10X model

• Remove the flashlight head by rotating it counterclockwise.
• Use a 5/32" hex wrench (included with 10X), to remove the screw in the center of the spring at the base of the head.
• Carefully separate the reflector from the head.
• Replace the inoperative lamp with a new one.
• Replace the reflector in the head and replace the Allen screw.
• Attach the head to the flashlight body.

NOTE – For all models, avoid touching glass bulb. Oil from your hand will degrade the surface and affect the performance of your flashlight.

Some flashlights use more than one lamp assembly — a standard lamp and an ultra high-output lamp. Runtimes for ultra high-output lamps is shorter per set of batteries.

For information on which lamp assemblies fit your flashlight, you can:

• Refer to the User Manual that came with your flashlight.
• Click to SureFire's main flashlight page, locate your flashlight, and click on it. This will take you to your flashlight's product page, where you can find the information you need in the Parts & Accessories section.
• Visit SureFire's online Flashlight Specifications Chart and scroll to your model.

No. The assembly is an integral unit. The same goes for the X80.

Your lamp should run for approximately 30 hours before it burns out. The lifespan will vary somewhat.

No. SureFire lights do not have a spare bulb compartment. However, you can purchase our watertight SureFire spares carriers, which hold an extra lamp assembly and up to six extra batteries, depending on the spares carrier model.

No. Runtime is how long a set of batteries will operate the flashlight at the specified light output.

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.

Connect the lanyard's split ring to the two small arches on the pocket clip of the flashlight.

No. Pocket clips will only fit flashlight models that originally come with them since they require a special slot for attachment. However, a lanyard kit is available for most models.

Either you have installed the batteries in the battery magazine incorrectly or you have installed the battery magazine in the WeaponLight incorrectly. To fix the problem:

1. Remove the battery magazine from the M500's battery compartment and verify that the batteries are installed with correctly polarity forward—it's marked on the magazine.
2. Replace the full battery magazine in the M500's battery compartment in the correct direction — that is, with positive (+) polarity forward.

If the LED's still do not turn on, call SureFire at 1-800-828-8809 and ask for Customer Service.

You have probably installed the batteries with the polarity reversed.

To fix the problem, remove the batteries from your M900's battery compartment and re-install them with the positive (+) end going into the compartment first.

If the LED's still do not turn on, call SureFire at 1-800-828-8809 and ask for Customer Service.

No! Do not try to recharge them, as this can be dangerous.

Using genuine Panasonic®, Duracell® or Energizer® batteries will not void your warranty, but using any other non-SureFire brand will void it.

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.

Customers should never:

• Use non-U.S.A. made batteries.
• Mix old and new batteries.
• Mix different brands of batteries.
• Purchase and use disposable batteries marked "PRC" or "Made in China".

Buy your SureFire® brand batteries from www.surefire.com (priced as low as $1.75 each when bought in bulk), or from an authorized SureFire dealer.

In both cases, remove the head of the flashlight to access and replace the batteries.

The light is red when the battery (or batteries) is taking a charge. It turns green when the charging process is complete.

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.

Several years when 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. 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.

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.

They are made to our specifications in China.