Handy Fan, retail $2.99 (www.o2-cool.com)
Manufactured by GLJ, LLC (www.o2-cool.com)
Last updated 01-05-11

The Handy Fan was sent by a fan of the website (pun not intended); it was purchased at a CVS pharmacy in Pennsylvania.

It is a small, battery-powered electric fan with two soft blades, and five LEDs in the rotor (hub) light up when the blades spin up fast enough. These LEDs light up in various patterns, changing patterns a little over once a second. When the power switch is released and the blades begin to spin down, the LEDs will continue to function for about two more seconds, until the centrifigual switch in the hub disengages and turns the LEDs and their associated driver circuit back off.


To use the Handy Fan, be sure batteries are installed in it (see below) first.

With the fan facing you, there is a spring-loaded momentary slide switch on the right side, on the motor housing, behind the blades. Slide this switch up and hold it there for as long as you need or want the cooling effects of the fan. About one second after the fan first begins to spin up, the LEDs in the hub will come on, and display patterns that change just over once a second.

When you want to turn the Handy Fan off, just release the slide switch. Power will be immediately cut to the motor, and the LEDs in the hub will extinguish approximately two seconds later.

It's as easy as that. Really, it is.

To change the AA cells for the motor, hold the fan upside-down and facing you. Lift the cap on the bottom of the barrel straight up, and set it aside. If necessary, tip the used batteries out of the barrel and dispose of or recycle them as you see fit. Drop two new AA cells in the barrel, orienting them so the cell on the right is button-end (+) positive up, and the cell on the left is flat-end (-) negative up. Place the end cap back on, and press it in place until it no longer goes down.

If the fan turns backward (turns counterclockwise as the fan is facing you and the air blows out the back), check to be sure you installed the AA cells correctly; reverse their (+) and (-) ends if this has occurred.

To change the LR44 cells in the LED hub assembly, pull the hub (blades and all) straight off the fan assembly, and set it down so the inside is facing up, like you see in the photograph below.
Using a #0 phillips screwdriver, unscrew and remove the two screws on the underside of the hub, and set them where you will not lose them.
Rotate the battery door (the thing you just removed the screws from) counterclockwise (as if loosening it), remove it, and set it aside.
Remove the two dead LR44 cells from their chambers, and dispose of or recycle them as you see fit.
Install the two new batteries into their chambers with the flat-side (+) positive facing out.
Replace the battery door, and screw the screws back in.
Place the hub assembly back on the fan body by pushing it onto the short motor shaft.
Now, go enjoy your spiffy fan.

Picture showing the hub assembly upside-down as it might be for a battery change.

This isn't a flashlight, so I won't whack it against a steel rod, try to drown it in the toilet, stomp on it, throw it, run over it, or subject to other indecencies that regular flashlights may be subject to. So this portion of the page will be more bare than this portion of the page on a flashlight evaluation.

The two fan blades are made of a soft, rubbery material, so they can't cut or harm you when the fan is running - unless of course, you bring it up to your eye. I don't know if you'll put an eye out, but at very minimum, it can't be very good for them.
But the blades are soft and flexible, so you can carry it in a purse or large pocket if desired.

There is a centrifugal switch in the hub that will not turn on and activate the LEDs until the fan's rotary speed is sufficient. So if the LEDs do not turn on when the fan is used, try changing the AA cells for the fan motor first. If that doesn't work, then it's probably time to change the LR44 cells in the hub.

There are three small rubbery "feet" on the base, these allow you to stand the fan up for storage purposes. You cannot use the Handy Fan hands-free, so balance is not an issue here.

Pictures showing the LEDs in the hub assembly illuminated, as the fan is turned on.

The two LEDs closest to the center are yellow, the two LEDs
outside them are yellow-green, and the LED at the rim is red.

Spectrographic analysis
Spectrographic analysis of fluorescence in the red body of this fan when irradiated with the 473nm Rechargeable Blue Laser.

Spectrographic analysis
Spectrographic analysis of fluorescence in the red body of this fan when irradiated with the Wicked Lasers Spyder 3 Arctic 445nm 1W Blue Diode Laser (2).

Spectrographic analysis
Spectrographic analysis of fluorescence in the red body of this fan when irradiated with the Wicked Lasers Spyder 3 Arctic 445nm 1W Blue Diode Laser (1).

USB2000 spectrometer graciously donated by P.L.

Unit was sent by a website fan and was received on 07-16-04.

UPDATE: 01-31-10
Product has failed, so the dreadful "Failed or was destroyed during/after testing" icon must now get used.



    PRODUCT TYPE: Battery operated fan with LED rotor
    LAMP TYPE: 3mm LED; 1 red, 2 green, 2 yellow
    No. OF LAMPS: 5
    SWITCH TYPE: Push and hold momentary switch behind fan blades
    BEZEL: Plastic cap protects LEDs
    BATTERY: 2x AA cells for motor, two LR44 cells for LEDs
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Light splash-resistance only
    ACCESSORIES: Two AA cells, two LR44 cells
    WARRANTY: Unknown/not stated


    Star Rating

Handy Fan * www.o2-cool.com

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