"Cop" Lithium Xenon

Provided for review
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1 Star
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Light Type: Incandescent
Light Class: General Use

The "COP" Lithium xenon flashlight is made of a fairly thick aluminum body with a nice external anodize finish. It runs on two 123A lithium cells. The beam produced is focusable by turning the bezel. Unfortunately a myriad of problems were encountered in using the light, all of which appear to be the result of low-cost construction and poor design.

The body is, as mentioned, made of thick aluminum. All of the external surfaces appear to be well done. There is a band of knurling around the center of the body for grip. The knurling is not overly aggressive, but more aggressive than a common Mag light. There is a band of knurling around the tailcap as well. Around the head is a hex-nut-like structure that serves as an anti-roll device.

The reflector seems to be coated metal and is fairly well done. The lens is plastic. The top of the bezel has 5 crennelations to allow light leakage if the unit is stood on its head. This serves as an indicator that the light is still on. Inside the head is a bulb retention plate which takes one of those unusual wide-base bulbs. Just below this plate is a wavy washer that serves as a spacer and contact for the bulb plate. As soon as I disassembled the light to take a closer look at the bulb, this wavy spacer broke. This is the standard disassembly that would be required to change the bulb... Add to the fact that upon disassembly I found metal shavings and metal sliver particles all over the desk - not a good thing. The machining of internal threads is rough and metal powder and shavings are everywhere.

Output wasn't too bad while it worked. The beam was focusable and could produce a decent hotspot with a wide corona and could be broadened out to cover a larger area with a flood of light.


Beam at one meter at target center

Runtime Plot: The light went for just over an hour when it suddenly dropped off. Odd behavior for a lithium powered light - there should have been a smooth curve as it dropped. In many cases this behavior might indicate the presence of a regulator circuit, but not this time. The bulb blew! Completely dead, and with no spare available testing could not be completed.


Runtime completed with Battery Station batteries. More information on runtime plots is available HERE.

The switch has a compass built in as the pressure switch. Click on, click off. Unfortunately the compass would jam at an angle inside the housing if pressed at a slight angle, which was followed by pressing around its edges until it would pop free again.

Water resistance appears decent. There are O-rings throughout the housing, including at the lens, head, tailcap, and switch.

Ergonomics: It is really a nice sized light. Comfortable to use, not heavy.


Size compared to a common 2AA aluminum light

Batteries: Two 123A lithium cells power the light, but since the bulb blew, I don't know how long the light will actually run until 50% output is reached.

What I Liked: Water resistant, Thick body, Nice external finish

What I Didn't Like: Poor machining of internal parts, Metal shavings and slivers everywhere, Bulb blew after just about an hour of use, Internal parts break upon disassembly, Generally poor internal construction.

Other Things I Noticed: A compass built into the switch? Why? It makes it look like a cheezy children's toy instead of a serious lighting instrument

Conclusions: Not recommended. A fine example of a fairly good body design made practically unusable due to the use of cheap components and poor quality control, or just plain poor workmanship, at the factory.


Quick Facts Table:

Item Reviewed.......................... "Cop" Lithium Xenon
Review Date ............................. September 2005
Case Material ........................... Anodized Aluminum
Case Features .......................... Knurled for grip, compass in tailcap
Case Access Type .................... Unscrew Tailcap
Switch Type ............................. Clickie
Reflector Type ......................... Coated metal, smooth
Lens Type ................................ Clear Plastic
Bulb Type ................................. Wide base xenon
Beam Type ............................... Adjustable
Beam Characteristics ............... Some artifacts from smooth reflector, holes appear on wide focus
Throw (Lux) at 1m (click for description) ~ 1500 at beam center. (38.73 Comparison Chart equivalent)
Overall Output (click for description) ~ 5000 (50.00 Comparison Chart equivalent)
Battery / Power Type................ 2 x 123A lithium cells
Battery Life (advertised) ........... unknown
Battery Life (test results) ........... Bulb failed at 1 hour 9 minutes
Environmental Protection ......... O-ring seals
Weight (oz.) with batteries ....... 5.6
Special Items of Note ............... Some internal components broke upon disassembly
Warranty .................................. unknown
Retail Cost ................................ $11.15 from Shenzhen's Retail Portal
 

 

 
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