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General Maintenance

• Do not disassemble the sealed head as doing so may 

cause damage to the flashlight and void the warranty.

• Replace the O-rings if they become stretched or damaged. 

Regularaly lubricate the O-rings.

• Clean the contacts of your light periodically

• 

Troubleshooting

If the Alloy-X fails to light:

• Check the battery to see if it needs to be recharged
• Check the batteries for proper installation.
• Replace batteries if proper installation is confirmed.
• Check the PCB board contacts or battery contact for dirt
• Clean the contct points with an alcohol soaked cotton swab. 

USA– International 5-Year Warranty

WARRANTY – Princeton Tec warrants this product to be free 
from defects in workmanship and materials under normal 
use for 5 years. This warranty covers all of the component 
parts of the product except batteries. This warranty does not 
cover deterioration due to normal wear or damage due to 
misuse, alteration, negligence, accidents, or unauthorized 
repair. Princeton Tec will repair or replace parts which are 
defective in workmanship or materials.

Your authorized Princeton Tec Dealer and Princeton Tec are 
the only facilities authorized to repair the product. After (3) 
unsuccessful attempts (within the warranty period) to repair 
the product, you have the right to elect replacement of the 
product or a refund of the purchase price less allowance 
for use of the product. NO INCIDENTAL OR CONSEQUENTIAL 
DAMAGES ARE INCLUDED IN THIS WARRANTY. (Some 
states do not allow the exclusion or limitation of incidental 
or consequential damages, so the above limitations or 

exclusions may not apply to you.) This warranty gives you 
specific legal rights, and you may also have other rights 
which vary from state to state.

Princeton Tec reserves the right to change product 
specifications without notice.

FOR CALIFORNIA RESIDENTS:
WARNING: 

This product contains Bisphenol A (BpA) a 

chemical known to the State of California to cause birth 
defects or other reproductive harm.

Return Policy

If your light fails to operate, follow these simple steps:

1.  Check batteries. Replace if necessary.

2.  To send your light in for repair or replacement, first 

contact Princeton Tec customer service on  

1-800-257-9080

 to request an RMA number. Please 

have your light model, date of purchase and a brief 
description of the fault you are experiencing. No 
warranty repairs will be accepted without an RMA 
number.

3.  Return the light without batteries to: 

Princeton Tec, PO 

Box 8057 Trenton NJ 08650.

 Postage due and freight 

collect items will not be accepted.

4.  Upon receipt your light will be processed in about 

two weeks. Please allow additional time for return 
transportation from NJ.

ENGLISH:

LED Charging Indicators

The LED on the positive end of the battery housing lights up 
when the cable is correctly installed.

 Charging

 - Red LED is illuminated.

• 

Fully Charged

 - Green LED is illuminated.

Charge time is approximately 4.5 hours.

IMPORTANT: Maximum charging temperature range is 20°F 
to 115°F with optimal temperature range between 50°F 
and 86°F. A safety circuit prevents charging outside the 
maximum range and the red charge LED will pulse rapidly. 
When temperature is within an acceptable range charging 
will resume.

Battery Installation 

– See Battery Installation Diagram

Alloy-X uses one 10900 Lithium Rechargeable Battery, as 
supplied by Princeton Tec. It is also compatible with 2 AAA 
Alkaline batteries.

When not using Alloy-X, separate the head and tail by 
turning counterclockwise approximately one turn. This 
will prevent accidental activation. Remove batteries when 
storing Alloy-X.

Observe proper battery polarity when installing the batteries. 
Improper installation of the batteries will damage light and 
void warranty.

WARNING 

!

  

• Never mix fresh and used batteries.
• Never mix different battery brands or chemistry types.
• Always remove drained batteries i`mmediately.
• Remove batteries during long periods of storage.

Switch Operation

– See Figure 2

ON/OFF

With the light off, a full press of the tail switch will produce 
an audible “click” and the light will turn on. The default is 

MEDIUM 

output. Another full press will turn the light off. 

Brightness Adjustment 

From 

ON

, a half press of the tail switch will cycle through the 

three output modes.  Default is to turn on in 

MEDIUM

.  The 

next half press will produce 

LOW

 which is then followed by 

HIGH

 and then a return to 

MEDIUM

.  The cycle will repeat. 

From OFF, a full press will turn the light on the next mode 
in the cycle.  For example, if the light is on in 

MEDIUM

 and 

then turned off, the next full press from 

OFF

 will turn the 

light on in 

LOW

.  If the light is turned off, the next click will 

result in 

HIGH

.  The cycle will repeat. 

Note:  If the light is left off more than one minute it will reset 

to the default which is turning on in

 

MEDIUM

Operating and Maintenance Instructions

Figure 1 – Battery Replacement 

2

1

3

+

-

Rechargeable Battery

+

-

+

-

2 AAA Alkaline

Figure 2 – Switch Operation  

Press 1x from On: 

Off

Press 1x:

 

On / Medium

From Low

Quickly press 2x 

(off and on) 

:

High 

From Medium

Quickly press 2x 

(off and on) 

:

 

Low

From Low

Half press 2x: 

(no click) 

:

 

High

From Medium

Half press 3x: 

(no click) 

:

 

High

From Medium

Half press 1x 

(no click) 

:

 

Low 

Alternate operation

Standard operation:

From Off

Cycle-memory continues for 
one minute, then resets

Figure 3 – Performance

Note: performance is based on Princeton Tec rechargeable battery. AAA output will be somewhat lower.

Modes

Lumens

Runtime

Beam Pattern

SPOT HIGH

400

0.5h

  

 

SPOT MED

250

1.25h

SPOT LOW

5

28h

DISTANCE (m)  

50 

72 

(ANSI FL-1 Standard)

Runtime

 is defined as the duration of time from the initial light output value—defined as 30 seconds after the 

point the device is first turned on—using fresh batteries, until the light output reaches 10% of the initial value.

Figure 2 – Charging  

 

1

FULLY 

CHARGED

CHARGING

2

3

Princeton Tec

PO Box 8057,

Trenton, NJ 08650

Phone: 609-298-9331

Fax: 609-298-9601

princetontec.com

© 2021 Princeton Tec

ALLOY-X

® 

DUAL FUEL 

LED PEN LIGHT

 

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