ViaTEK Mini Dynamo, retail $11.98 (
Manufactured by ViaTEK Consumer Products (
Last updated 11-26-07

The Mini Dynamo is advertised as the "world's smallest" dynamo (hand crank-recharged) flashlight; and it really does look like that's the case. It measures just 3.25" L, 1.75" W, and 1.0" D.

It features three brilliant white LEDs, has a rechargeable battery inside, and the package claims that one minute of cranking provides a full hour of light! You never have to plug it in or find a battery charger - you just turn the crank on it to recharge.


This flashlight came to me ready to use. When you receive yours, remove it from the package the best way you see fit (I used a pair of household scissors to cut down one side of the package) , unfold the crank, and wind it at two revolutions per second (120RPM) for one minute. This is to ensure the internal battery is fully charged and ready to go.

Once this is done, you only need to crank it for one minute to obtain ~60 minutes of light.

Slide the slide switch on the right-hand side of the unit forward (toward the LEDs) to turn the LEDs on.

Slide it back toward the tail of the light to turn them off.

To charge the internal battery, unfold the crank, and wind it at two revolutions per second (120RPM) for one minute.
Yes, that's all there is to it.

Because there are a number of moving mechanical parts inside this flashlight, "The Smack Test" really isn't that appropriate here.

Same with "The Toilet Test". Because of the hand crank, I would not have performed "The Toilet Test" anyway.

So this section of the page will seem ***SIGNIFICANTLY***more bare than this section of the page on a page about a battery-operated (using disposable batteries or batteries that are externally recharged) flashlight.

Beam photograph on the test target at 12".
Measures 41,900mcd on a Meterman LM631 light meter.
This is actually a very good value for a dynamo (crank) flashlight!!!

Spectrographic plot
Spectrographic analysis of the LEDs in this flashlight.

Test unit was purchased on the Things You Never Knew Existed website on 11-20-07, and was received on the afternoon of 11-23-07.

UPDATE: 00-00-00



    MANUFACTURER: ViaTEK Consumer Products
    PRODUCT TYPE: Dynamo-type LED flashlight
    LAMP TYPE: 5mm white LED
    No. OF LAMPS: 3
    BEAM TYPE: Medium flood with soft corona
    SWITCH TYPE: Slide switch on/off
    CASE MATERIAL: Plastic
    BEZEL: Plastic; LEDs protected by transparent plastic window
    BATTERY: Unknown type & number of rechargeable cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Very light splatter-resistance at maximum
    ACCESSORIES: Small lanyard
    SIZE: 3.25" L, 1.75" W, 1.0" D
    WARRANTY: 1 year


    Star Rating

ViaTEK Mini Dynamo *

Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at

Please visit this web page for contact information.

Unsolicited flashlights, LEDs, and other products appearing in the mail are welcome, and it will automatically be assumed that you sent it in order to have it tested and evaluated for this site.
Be sure to include contact info or your company website's URL so visitors here will know where to purchase your product.

WHITE 5500-6500K InGaN+phosphor 
ULTRAVIOLET 370-390nm GaN 
BLUE 430nm GaN+SiC
BLUE 450 and 473nm InGaN
BLUE Silicon Carbide
TURQUOISE 495-505nm InGaN
GREEN 525nm InGaN 
YELLOW-GREEN 555-575mn GaAsP & related
YELLOW 585-595nm
AMBER 595-605nm
ORANGE 605-620nm
ORANGISH-RED 620-635nm
RED 640-700nm
INFRARED 700-1300nm
True RGB Full Color LED
Spider (Pirrahna) LEDs
True violet (400-418nm) LEDs
Agilent Barracuda & Prometheus LEDs
Oddball & Miscellaneous LEDs
Programmable RGB LED modules / fixtures
Where to buy these LEDs 
Links to other LED-related websites
The World's First Virtual LED Museum
Legal horse puckey, etc.
LEDSaurus (on-site LED Mini Mart)

This page is a frame from a website.
If you arrived on this page through an outside link,you can get the "full meal deal" by clicking here.