Wolf-Eyes Rattlesnake M90-13V Rechargeable

Provided for review
by the kind folks at:

 
 
4½ Stars
Very Good/Excellent
         

Light Type: Incandescent Xenon
Light Class: Specialty / Rough Use / Etc.

The Wolf-Eyes flashlights are designed to be a lower-cost yet solid competitor for the "high end" tactical flashlight market. They are made in China by Copia-Photoel Tech Co., Ltd. The lights appear to be uniquely designed (not a rip-off of another company's design) and are well made.

This is the Rattlesnake M90-13V, which is essentially a rechargeable version of the M90X. The M90-13V uses an M90 body, a special 300 lumen bulb, three lithium-ion rechargeable cells, and a battery tube extender to produce a dazzling quantity of light without burning through 123A primary cells like they're going out of style.

Body:

The body of the M90-13V is hard anodized aircraft aluminum. The head has a notches for grip and a heatsink-like fin around its circumference. Below that is a decorative ring with 5 cutouts followed by a wide ring of checkering around the center of the body tube. The checkering is a diamond cut which is a non-aggressive, but a good gripping surface. There are two flat panels machined into either side of the body tube for printing and these also aid in gripping the light.

The tailcap has 6 longitudinal grooves that run nearly the length of the tailcap. The rubber covered tailcap has a slight texture as well. The body tube extender, needed to fit the three rechargeable cells, fits between the tailcap and the body.

Closeup of body extender, installed.

Bezel/Head:

At the front of the light is the recessed glass lens. Behind that rests the lamp assembly which includes the reflector, bulb, and contacts. The reflector is metal with a bumpy texture to smooth out imperfections in the beam. The xenon bulb sits in the center of the reflector.

I was surprised by the heft of the lamp assembly. It's pretty solid. It is advertised as being "shock isolated", but I don't see any indication of a specific shock dampening system other than the spring contact behind the lamp assembly.


Main xenon bulb lamp assembly

Output:

The main lamp is screaming bright. Great output and a very smooth beam.

The white light produced by the xenon bulb is a typical incandescent white which is a relatively low color temperature and appears slightly yellowish when compared to a daylight white light source, which is normal. In practical use it appears as a pure white light. The beam has a bright central spot which blends into the corona , followed by a wide dimmer spillbeam.


Main beam at one meter at target center

Runtime Plot:

Considering the scorching amount of light it produces, an hour of runtime is darn good, and that's about what you get. By using rechargeable li-ion cells, the discharge curve is fairly flat, not dropping below 75% max output until about 45 minutes through the continuous burn runtime test. The cells have a protection circuit to prevent over discharge so when you see the light starting to dim, you only have a minute or so before it turns itself off completely.


Runtime completed with included rechargeable batteries. More information on runtime plots is available HERE.

Switch:

The normal tactical switch which is included with the light is a rubber capped clickie. Press gently for momentary use, press until it clicks for constant on. Unscrew the tailcap to lock out the switch and prevent accidental activation. The switch produces a slight auditory feedback, but almost no tactile feedback when clicked. The difference in stroke between momentary and constant activation is significant, requiring moderate additional pressure to click the switch. The rubber cap does protrude above the level of the tailcap, so the light cannot stand on end.

Seals / Water Resistance:

The light is advertised as splashable. It has O-rings and rubber seals in all the right places.

If it gets wet inside, just disassemble as much a possible without tools and let it dry before using again.

Ergonomics:

It weighs in at less than a pound and is easy to click on and off. It's actually surprisingly well balanced and comfortable to use. In use the body does get warm, topping out in my tests at about 116 deg F. in open air with a low velocity fan 18" away keeping a gentle breeze on the light during the runtime test. When the batteries died during the runtime test I was able to immediately hold the light in my bare hands without any discomfort.


Size compared to a common 2AA aluminum light

Batteries: Three rechargeable LRB150A Wolf Eyes cells power the light. They are included with the light and a CH-02 AC Fast Smart Charger is included. The charger will charge two cells at a time with a 3 hour charge time. If you need fast turnaround, you may want to pick up another charger so you can charge all three cells at once. Otherwise it will take 3 hours to charge 2 cells, and another 3 hours to charge the third cell.

Charger, tube extender, and three rechargeable cells

UPDATE Aug 2006: Received an e-mail from reader Gregory regarding the Wolf-Eyes 13V rechargeable light's recharging system:

I just received the Rattlesnake M90-13V in the mail and just to let you know they updated the charger. To charge it you remove the endcap and screw the the charger endcap on and charge away. You don't need to remove the batteries as the whole flashlight charges at once, very easy, great design.

And here it is...

This is the charger that the light is now shipping with (as of Aug 2006), not the charger above. Just remove the normal tailcap, replace it with the charger tailcap and plug it in. Watch for the little LED on the charger to turn from red to green. This really improves the convenience of charging - no need to charge the batteries separately and faster turn-around time. Also, the main lamp glows slightly while charging - makes for a nice little nightlight.

To change out the batteries if necessary: unscrew the tailcap, drop out the old cells and recharge the cells. Place fully charged cells in, reattach the tailcap and you're ready to go. Note that batteries go in NEGATIVE first, with the positive end pointing toward the tailcap. However, I did insert the batteries the wrong way and the light still worked.

Accessories: There are a bunch of little add-ons you can get. If you already have an M90 or M90X you can get a kit to make it rechargeable which includes the tube extender, batteries, lamp, and charger.

What I Liked: Water resistant, Very bright, Smooth beam, Compact size relative to it's output, Seems to be quite well made, Rechargeable cells are both environment- and wallet-friendly.

What I Didn't Like: Nothing significant

Picky Little Things: It would be nice to be able to charge all three cells at once, but you need a second charger for that. (See update above - the light now comes with a charger that charges the cells INSIDE the light - no need for a second charger).

Conclusions: I can completely see this light being used by professionals for "tactical" situations. It's extremely bright, easy to use and operate, and projects a solid, smooth beam. Considering how bright it is and how fast it could go through batteries, I think the fact that it uses rechargeable cells is a huge plus. In terms of overall output, only one light so far reviewed rates higher - the Surefire 10X, which is rated at 500 lumens of output. The Rattlesnake M90-13V produces a bit more than half the light of the 10X but costs 75% less. This makes it a bargain if you need a whole lot of light.


Quick Facts Table:

Item Reviewed.......................... Wolf-Eyes Rattlesnake M90-13V
Review Date ............................. June 2006
Case Material ........................... Anodized aluminum
Case Features .......................... Checkered for grip
Case Access Type .................... Unscrew tailcap for battery change
Switch Type ............................. Clickie tailcap with momentary function
Reflector Type ......................... Silvered, textured, metal
Lens Type ................................ Glass (?)
Bulb Type ................................. High pressure xenon
Beam Type ............................... Spot
Beam Characteristics ............... Smooth
Throw (Lux) at 1m (click for description) ~ 9600 at beam center. (97.97 Comparison Chart equivalent)
Overall Output (click for description) ~ 28600 (286.00) Comparison Chart equivalent)
Battery / Power Type................ 3 x LRB150A Li-Ion Rechargeable cells
Battery Life (advertised) ........... unknown
Battery Life (test results) ........... ~ 1 hour on a charge
Environmental Protection ......... O-ring seals, splashable
Weight (oz.) with batteries ....... 14.3
Special Items of Note ............... Many accessories available from manufacturer
Warranty .................................. Yes, but length unknown.
Retail Cost ................................ 149.95 US$ at time of review at PacificTacticalSolutions.com
 

 

 
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