Model 2 Accessories
Model 3/4 Accessories
Simulator (Requires Flash)
DOS Software (12 msgs)
eternaLight (273 msgs)
eternaLight Q&A (134 msgs)
Gauss Gun, physics, science (23 msgs)
LINUX, love and life. (3 msgs)
Nevada Politics (7 msgs)
World Politics (20 msgs)
Forum Rules and Policy
Sales and Repair
1711 Maple Road
Defiance, IA 51527
Mon-Fri: 9am-4pm Central
Technology Associates Inc.(remembered)
The EternaLight assets of Technology Associates, Inc.
have been transfered to EternaLights, LLC. All orders
and services issues will be handled by them.
Thomas Hoops and Derone Bryson founded Technology Associates.
In 1994, their partnership incorporated under the name
of Technology Associates, Inc. Between 1993 and 2000,
Technology Associates successfully operated a small
chain of computer stores in the Reno/Sparks area which sold
and serviced computers.
Technology Associates was also one of the founding investors
in Great Basin Internet Services (GBIS), Northern Nevada's Largest
Independent internet service provider. In 1998, TA divested itself
of GBIS. In 2000, TA divested itself of it's retail stores
to pursue manufacturing of the EternaLight flashlight
and other related and unrelated products developed by Thomas Hoops
and Derone Bryson. In 2007,
the organization formerly known as Technology
Associates, Inc., founded by Thomas Hoops and
Derone Bryson in 1992 ceased to exist.
This site is still a
functioning sales platform for the EternaLight products
manufactured and sold by EternaLights, LLC. However,
the remainder of the site remains as it was in it's finality before
the closing of Technology Associates, Inc.
Today Mr. Bryson is privately employed as a Software Engineer. Mr. Hoops
is privately employed in a manufacturing company as
it's CTO. After working together since 1990, through their various
projects and partnerships, Mr. Hoops and Mr. Bryson are still best friends
and continue to explore new opportunities together.
Ah... so many questions and NOW finally, some answers!
Support and tips/tricks...
(last updated 6/1/02)
- When I turn on my light, the lights go out one by one shortly after,
This is the number one clue that you did not take the time to read the
manual that came with your flashlight. Your flashlight comes up in the
"Timer" mode. It intentionally self extinguishes so as to not consume power
if it was accidentally turned on. Read your manual :)
Is the eternaLight waterproof?
Currently, the model 2 eternaLight is not. If it is splashed, it will
likely survive. But, if it is immersed, it should be turned off,
and have the batteries removed and allowed to dry as soon as possible. If you
wish to quickly provide some water tightness to the unit, simply seal it in
a ZIP-LOCK bag. Since you do not need to access any sliding switches or
twist the unit to turn it on or control it like a conventional flashlight,
it will function this way just fine, and, it won't void your warranty.
The models 3, 3M, 3X, 4M and 4X eternalights are water resistant.
The models 3M and 4M float! They are slightly larger than the Model 2. See
Statement of water
tightness for details.
Some of my lights are brighter than others, is there something wrong?
First, a variation is color is normal (see question after next). Second,
a slight variation in intensity is normal also. Remember, most flashlights
only have one bulb so people aren't use to having four of them to compare.
In other LED flashlights which use multiple lamps, they're often clustered
together so it is hard to see differences but they all have them. However,
a major variation in intensity is a good indicator that it is time to
change your batteries.
How can I get an even longer battery life?
The current standard model 2, 3 and 3X eternaLight is shipped with Energizer
ultra alkaline batteries. The time ratings given in your manual are
based on these batteries. The old cheap zinc-carbon batteries will work
fine but provide a much shorter life. The best battery we recommend at
this time is the Eveready L-91 AA lithium battery. This should perform
20 to 30 percent on average longer than the standard alkaline batteries mentioned above.
They also provide some added benefits: Alkalines have a shelf life of
about 7 years. These batteries have a shelf life of 10 years! They
weigh about 1/3 less than the alkaline batteries. They will perform in
a much colder environment and will function longer in a much hotter one.
They are readily available at your local Radio Shack but.... they cost
about 4 times as much as the Duracell or Eveready alkaline batteries.
If cost is not an issue, these are the batteries to have.
Can I use rechargeable batteries?
Yes. However, the light may not be as bright because the nominal cell
voltage of nickel-cadmium and the newer nickel metal hydride batteries are
lower than alkalines. Also,
nickel-cadmium and nickle metal hydride batteries have a lower internal
resistance which results in a much shorter shelf-life after a charge (typically no more than
three months). Considering the tremendous amount of time the
eternaLight affords in use from standard alkaline batteries, it hardly
seems worth the hassle of using nickel-cadmium or nickle metal hydride
batteries. In general, any cell voltage between 1.25 and 1.7 volts is
safe to use but the best performance and brightness will be achieved with
cell voltages greater than 1.45 volts (as in alkalines, lithium and zinc
Not all of the lamps are the same color, what's wrong?
Nothing is wrong, this is normal. The color of the lamps will vary
slightly, some have a
pinkish, yellowish, blueish or greenish tint. This does not affect the
performance or life and is normal. If you thought your eternalight
was expenseive to begin with, it would be even more expensive if we had
to color match the lamps. At this time, the lamp manufacturer is not
capable of getting the color consitancy tighter - remember, this is a
Is there a way to "Clip" my eternaLight onto something?
There are, available from us, nylon and leather carrying cases which
clip to a belt,
pants or through a belt. They protect the light extremely well and are
attractive. However, they are not intended to allow the light to be used
while in the case. These cases are $15.00 and are available for
all models (nylon and leather for the Model 2 and leather only for
the Model 3 & 3M). Sticking vel-cro to
the eternalight to affix it to areas (including the bill of a baseball
cap) works well and will not void the
warranty. The Model 3, 3X, 3M, 4M and 4X have holes for lanyards.
The Model 4M and 4X also have magnets on the back for attaching to
I dropped my light and the LED's are bent (they're not pointing
straight ahead) - what do I do?
This is more of a problem with the Model 2 than the Model 3s. It was
decided that the small amount of additional illumination was worth
sacrificing in the model 3's to recess the lamps some for better
protection and to retain alignment. However, we should state that the
lamps are extremely durable (well beyond that of the flashlight itself)
so damage to the actual lamps has never been seen yet. So, the
following procedure is really written for the Model 2 since the Model
3's don't really have this problem. Now then, if you
don't feel confident trying the following procedure yourself, you
can send the unit to us to request a light alignment and we will perform
this for you. However, you can perform this yourself by doing the following:
Remove the two screws (model 2) and open the cover.
See your manual (Replacing
batteries) for how to do this.
With the batteries still in place, push all the LED's flush against the
inside of the bezel (the channel they intentionally protrude through). BE
CAREFUL to avoid bending the leads of the LED's too much.
Replace the battery cover and screws.
Against a white surface, turn the light on and hold it perpendicular to the
surface about three inches away. Then, look at the pattern of light
projected onto the surface. The pattern should paint a straight line.
Push the LED's up or down (NOT IN) to achieve as close to a straight line
Move the light 4 to 6 inches back and forth, the pattern should remain
straight, only expanding as you pull away from the surface. If you notice
one or more lights straying from the pattern as you move back and forth,
bend them up or down until the pattern remains straight when moving.
What is the failure rate on eternaLights?
As of the date of this entry 8/12/99, thousands of eternaLights
have been sold and only 4 units have been returned for warranty/repair!
As of January 1, 2002 failure rate was less than .5%
If my eternaLight does not qualify for warranty, how can I get it repaired?
Simply send $10.00 and your eternaLight to us and we will correct
whatever the problem is regardless of abuse for this blanket fee. All
eternalights have retroactively been upgraded to a limited lifetime warranty.
Is there a difference in function between the Model 2 and the Model 3s?
The Model 2 still uses the older software. The difference between the
software in the Model 2 and the Model 3 is minor but there are some.
Of most interest, the Model 3 has a battery check feature which the
Model 2 does not. There are some timing and responsiveness improvements
in the Model 3 software as well. In the Model 3 software, you can select
the individual lamp in the dimmest setting. The Model 3 software also
has a consistant "click scale" for dim settings where the Model 2 has a
"glide down" type adjustment for the dim setting.
Is there an alternate way to explain how to use the battery check feature?
As mentioned above, this feature is only in newer model 3's. Included here is
the text which a user sent to us recently:
Just a quick note to let you know my technique that is proving
successful at getting the battery voltage.
1) position my digital watch so I can see it clearly.
2) turn Eternalight on.
3) Press and hold rate button.
4) observe second as light flashes
5) add 10
6) release on that number.
It is pretty mindless and works perfectly.
I love this flashlight,
Thanks to Ken Barnsdale for that info. The reason the battery test function is not a simpler process is because it was
added to the functionality with the remaining resources of the
microcontroller. To simplify this feature would require a hardware change, increasing
the price. It was simply something we could add without increasing the cost, so we did :)
Sometimes my light comes on all by itself - is there something wrong?
There are two things which can cause this. Neither are signs of a
defective unit. In models made prior to Feb 2001, static electricity
would sometimes cause them to turn on. Carrying in a pocket, or plastic
package where static could build up and exchange with the unit could cause
a power on. Fortunately the timer will usually save you here. While
it appears this problem has been corrected in new units, it has recently
been discovered that certain cell phones, in certain modes (analog vs. digital)
can cause the unit to turn on if they are within 8 inches or less proximity
of the phone or radio. Certain Motorola, Nokia and Nextel models have been identified
of being capable of doing this. You can experiment with your phone by placing
your light next to the phone and calling the phone. If the light comes on
by itself, then you have this situation. If this is a concern, and keeping the
two separate is not an option, you may try storing your flashlight in a
metal tin like band-aid box or wrapping it in aluminum foil.
How bright is the eternaLight?
This is a very difficult question to answer. The problem is that
most of the measurement
systems used for comparison today are based on incandescent and fluorescent
bands emitted by a white LED are different so they are not fully
accounted for by most rating systems. And, since your eye is more sensitive
to some colors than other, pure power output in terms of watts is useless
for determining useful light. Lumens would be the most practical but again,
it doesn't account for certain bands emitted by white LEDs. For example,
most people say our light is brighter than a mini maglight.
Yet, the mini maglight produces about 20 lumens and ours only produces
about 10. Consequently, all we can answer for most people is that it puts
out enough light to be used as a bicycle headlamp. And, it is visible
from over 3 miles away and can illuminate objects from over 80 feet.
How tight should I make my screws?
We recommend 3.5 oz-inches for Model 3 series and 3.25 oz-inches for
Model 4 series. However, this may not be practical for most people
to measure. So, a laymen's rule would be to tighten the screw until
the case begins to compress the gasket. Over-tightening a Model 3
can result in striped threads in the plastic. Over-tightening a
Model 4 can result in postponed fractures or breakage. The
polycarbonate of the Model 4 series will not usually show immediate
overstress. Part of the strength of this material is in its ability
to deal with impulse or short duration stress, not sustained stress.
The Magnet fell out of my Model 4 series...
The magnets in the Model 4 series are attached with a double
sided tape adhesive that appears to let go after some period
(several days) of force. Until a more permanent adheasive is found,
we don't recommend that you store the unit suspended by its magnet
unless you have re-adheared it with a sufficient adheasive.