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BATTERY-OPERATED PURPLE CHRISTMAS LIGHTS

Battery-Operated Purple Christmas Lights, retail $5.99
Manufactured by (Unknown)
Last updated 12-12-21

Tired of getting out the Christmas lights every year and finding they don't work because half of the bulbs 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 Battery-Operated Purple Christmas Lights is a set of battery-powered LED Christmas lights that are cheery and colorful -- and surprisingly bright.

This light set has 30 "dewdrop" phosphor purple, operates from three (3) AA cells, and has silvery-colored 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 left 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, slide the battery door off in the direction of the arrow embossed onto it, 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 $#Ā”77Y IDEA!!!

Just set the damn thing aside instead.

If necessary, remove and dispose of or recycle the two 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.

Slide the battery door back on, 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 166.10mA 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.

One thing that I noted almost immediately is that these lights are extremely blue!
I mean there's a slight purplish cast to them, but if you asked 100 "Joe Blows" off the street what color they were, I'd venture to guess that at least 95 of them would holler out, "BLUE!!!"

Photograph of the set along with other strings of lights in our holiday installation.
They're the purple ones, silly!!! (third row from the bottom)

Photograph of the set, "illuminurinated" of course.
Indoors, very subdued lighting.

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 445nm and 465nm to pinpoint native emission peak wavelength, which is 447.650nm.

Spectrographic analysis of one of the phosphor purple LEDs in this light set; spectrometer's response narrowed to a band between 610nm and 630nm to pinpoint the phosphor peak wavelength, which is 643.230nm.

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

USB2000 Spectrometer graciously donated by P.L.

TEST NOTES:
Test unit was purchased on Ebay on 12-01-21 and was received at 10:59am PST on 12-09-21.

UPDATE: 00-00-00

PROS:
Brighter than expected

NEUTRAL:
Set has some degree of water-resistance but is NOT submersible

CONS:
Battery life *MAY* be on the short side.
Lights are *VERY* bluish!!! (this is by far what nocked the most stars off its rating!)

Unknown

Battery-operated Christmas light set

Phosphor purple "dewdrop" LED

N/A

Slide on/off on battery box

Plastic and silvery-colored wire

N/A

3x AA cells

160.50mA

Light splatter-resistant at best

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

None

Lighted length 9.84 feet (2.99M)

104.40g (3.68 oz.) incl. batteries

China

Unknown/not stated

Battery-Operated Purple Christmas Lights *

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