LEDs - Gallium Indium Nitride UV, violet, purple, blue, aqua, turquoise, green, white. Also Gallium Arsenide and others. New LED MUSEUM! GaN, InGaN, SiC, GaAs, GaP, GaAlP, ZnSe, flashlight, flashlights.

20 BATTERY-OPERATED LED MINI LIGHTS

20 Battery-Operated Multi-Color LED Mini Lights, retail $6.00 (www.wallmart.com...)
Manufactured by (unknown) for Wall*Mart
Last updated 12-13-21

Tired of getting out the Christmas lights every year and finding they don't work because half of the blubs are busted?
Tired of the endless chore of hunting down & changing bulbs as they go out over the duration of the holidays?
Do you live in California or Washington and pay so much for power you can no longer afford to put up lights anymore?

Than this light set is for you.

The 20 Battery-Operated Multi-Color LED Mini Lights is a set of battery-powered LED Christmas lights that are cheery and colorful -- and have especially deep, vibrant, fully saturated colors.

This light set has 20 T1ž (5mm) LEDs with inverse conical lenses, operates from three (3) AA cells, and has green insulated wire.

Size of product w/hand to show scale

SIZE

Feed the lights first (see directly below), and then you can go decorate that porch.

String these up as you would ordinary (corded) seasonal lights, but handle them carefully because the wires are considerably thinner than the wires are on corded sets. Hang them on porches, mantles, doorways, or other places where you might normally hang light sets.

Or just hang the suckers off your dorm room ceiling for that special holiday feeling all year 'round.

To turn them on, slide the black slide switch on the battery box to the right until it clicks once to turn them on. Slide it the other way to turn them on in Timer mode.

To neutralise them when you are finished using them, slide the switch to the center position.

In Timer mode, the lights will operate on a 6-hours on / 18-hours off automatic timer; simply meaning that you can just "set it and forget it" to borrow a phrase from one of Ron Popiel's infomercials that ran near the turn of the century.

To change the batteries, unscrew & remove the Phillips screw, and set it aside. Lift off the battery door, and carefully place it on the floor directly in front of the fireplace so that Santa Clause will slip on it and fall when he comes down the chimney to deliver presents on Christmas morning...O WAIT!!! THAT'S A REALLY $#Ą77Y IDEA!!!

Just set the damn thing aside instead.

If necessary, remove and dispose of or recycle the three used AA cells from the compartment.

Insert three new AA cells in the compartment, orienting each cell so its flat-end (-) negative faces a spring for it in each chamber.

Place the battery door back on, screw in that little screw that you removed earlier, and be done with it.
Aren't you glad that you didn't leave it in front of the fireplace where a Christmas accident could occur now?

Current usage measures 48.40mA on my DMM's 200mA scale.

These light sets appear at least *reasonably* durable, in that they should not just fall apart on their own or through just casual handling.

This product is meant to be used as a Christmas light string in a reasonably dry area indoors or in a covered location outdoors, not as a flashlight meant to be carried around, thrashed, used, trashed, and abused; so I won't try to drown them in my toilet, bash them against the concrete floor of a patio or a steel rod, let my landlady's puppies and adult doggos uranate (piddle) on them, run over them with a 450lb Quickie Pulse 6 (motorised wheelchair), or perform other indecencies that a regular flashlight might have to go through.

There is no evidence of PWM (Pulse Width Modulation) at least at low-AF (audio frequencies); however my oscillope was stolen from me in late-2018 so I am not equipped to test for the presence of PWM at higher frequencies.

Photograph of the set, illuminated of course.
Indoors, with photoflash.

Photograph of the set, illuminated of course.
Indoors, no photoflash.

Spectrographic analysis of one of the red LEDs in this light set.

Spectrographic analysis of one of the red LEDs in this light set; spectrometer's response narrowed to a band between 620nm and 640nm to pinpoint the peak wavelength, which is 628.010nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at htr.txt

Spectrographic analysis of one of the orange LEDs in this light set.

Spectrographic analysis of one of the orange LEDs in this light set; spectrometer's response narrowed to a band between 595nm and 615nm to pinpoint the peak wavelength, which is 605.330nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at hto.txt

Spectrographic analysis of one of the yellow LEDs in this light set.

Spectrographic analysis of one of the yellow LEDs in this light set; spectrometer's response narrowed to a band between 580nm and 600nm to pinpoint the peak wavelength, which is 588.200nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at hty.txt

Spectrographic analysis of one of the green LEDs in this light set.

Spectrographic analysis of one of the green LEDs in this light set; spectrometer's response narrowed to a band between 520nm and 540nm to pinpoint emission peak wavelength, which is 526.850nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at htg.txt

Spectrographic analysis of one of the blue LEDs in this light set.

Spectrographic analysis of one of the blue LEDs in this light set; spectrometer's response narrowed to a band between 445nm and 465nm to pinpoint emission peak wavelength, which is 455.060nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at htb.txt

Spectrographic analysis of one of the phosphor purple LEDs in this light set.

Spectrographic analysis of one of the phosphor purple LEDs in this light set; spectrometer's response narrowed to a band between 440nm and 460nm to pinpoint native emission peak wavelength, which is 453.290nm.

Spectrographic analysis of one of the phosphor purple LEDs in this light set; spectrometer's response narrowed to a band between 645nm and 665nm to pinpoint phosphor emission peak wavelength, which is 659.350nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at htp.txt

USB2000 Spectrometer graciously donated by P.L.

TEST NOTES:
Test unit was purchased on Ebay on 11-30-21 and was received at 12:40pm PST on 12-06-21.

UPDATE: 00-00-00

PROS:
Extremely saturated colors
Possibility of longer-than-usual battery life when compared with other battery-powered string light sets

NEUTRAL:

CONS:

(Unknown) for Wall*Mart

Battery-operated Christmas light set

"T1ž (5mm) LED

20 (8 red, 7 yellow, 8 green, 7 blue)

N/A

Slide on/off/timer on battery box

Plastic and dark green wire

N/A

2x AA cells

48.40mA

Light splatter-resistant at best

SNIETY MIKOLAJ ZA POMOCA SZCZOTECZKI DO ZEBÓW, KTÓRY SPADL W TOALECIE, NIE!

None

Lighted length 6.5 feet (1.9M)

142.70g (5.03 oz.) incl. batteries

China

Unknown/not stated

20 Battery-Operated Multi-Color LED Mini Lights * www.wallmart.com...

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 bdf1111@yahoo.com.

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.

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.