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LED BATTERY-POWERED
CHRISTMAS LIGHTS
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LED Battery-Operated Christmas Lights, retail $3.59 (www.rightaid.com)*
Manufactured by (Unknown) for Right Aid (www.rightaid.com)
Last updated 02-18-14

The LED Battery-Operated Christmas Lights is a battery-powered set of LED holiday lights that feature 20 3mm LEDs with inverse conical lenses on a cord attached to a box containing two AA cells and a slide switch that turns them on in steady mode and off.

What sets this set apart from other, similar sets that you can get isn't the battery box, and it isn't the slightly thicker-than-expected wires...no, it's that this light set has phosphor yellow LEDs (that produce a slightly whitish true yellow light) in it, rather than those distinctly amberish yellow LEDs that you see in most other sets!
It also has phosphor red LEDs which is rather unexpected given the price of this light set!

* Product was not found on the Right Aid website, so this URL simply leads to their 'front door'.

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. Hang them on porches, mantles, doorways, or other places where you might normally hang light sets -- or just string the suckers across your dorm room ceiling for that special holiday feel all year 'round.

To turn them on, slide that little black switch on the upper-right side of the battery box toward the "on" legend (all the way left -- as far as it will go).

To neutralise them, slide the switch to the "off" position (all the way to the right).

To change the batteries, use a small Phillps screwdriver to unscrew & remove the screw holding the battery door in place, and set it aside. Lift the battery door off from the end nearest the switch, carry it to a bridge over deep water (the Oakland Bay Bridge would be ideal; however, the Juneau-Douglas Bridge would also do in a pinch here), and throw it over the side so that it goes "blub blub blub" all the way to the bottom of Gastineau Channel with all of the bowling balls that were lobbed over that bridge in the 1950s and 1960s...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

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

Insert two 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, insert and gently tighten that little screw, and be done with it.
Aren't you glad that you didn't throw that battery door over the side of the Juneau-Douglas Bridge now?

This is what the Juneau-Douglas Bridge looks like...or what it lookED like anyway before it was replaced in 1976.

And this is what the bridge looks like now.

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 seasonal light string (or for parties, weddings, and other festive occasions), not as a flashlight meant to be carried around, thrashed, used, and abused; so I won't try to flush them down the toilet, bash them against the concrete floor of a patio or a steel rod, let our household's five kitty cats uranate (go to the litterbox) on them, run over them with a 450lb Quickie Pulse 6 (motorised wheelchair), or perform other indecencies on them that a regular flashlight might have to go through.

The LEDs aren't dome-shaped like you'd expect; instead, the lenses on them have a reverse conical shape moulded into them - this helps the lights to be visible at much greater viewing angles than a standard dome-shaped LED would allow.

Photograph of the light set on the floor -- "illuminurinated"

of course.

Spectrographic analysis of the red LEDs in this light set.

Spectrographic analysis of the red LEDs in this light set; spectrometer's response narrowed to a band between 630nm and 650nm to pinpoint peak wavelength, which is 637.950nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/xmas21-r.txt

Spectrographic analysis of the red LEDs in this light set; spectrometer's input greatly overloaded in an attempt to find a blue, blue-green, or green pump wavelength because an expert in LEDs who's work I implicitely trust speculates that this may in fact be a phosphor red LED! Spectrometer's response narrowed to a band between 410nm and 455nm to pinpoint native emission peak wavelength, which is 443.050nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/x21-r.txt.
This data file has been limited to a spectral response from 400nm to 455nm.

Repeat spectrographic analysis of the red LEDs in this light set; spectrometer's input greatly overloaded (even more so than the last analysis) in an attempt to find a blue, blue-green, or green pump wavelength because an expert in LEDs who's work I implicitely trust speculates that this may in fact be a phosphor red LED! Spectrometer's response narrowed to a band between 410nm and 460nm to pinpoint native emission peak wavelength, which is 440.220nm.

Spectrographic analysis

Note the spike at ~440nm; this pretty much discounts spectrometer noise.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/x21-r2.txt.
This data file has been limited to a spectral response from 400nm to 460nm.

Repeat spectrographic analysis of the red LEDs in this light set; spectrometer's input greatly overloaded (even more so than the last two analyses) in an attempt to find a blue, blue-green, or green pump wavelength because an expert in LEDs who's work I implicitely trust speculates that this may in fact be a phosphor red LED! Spectrometer's response narrowed to a band between 410nm and 470nm to pinpoint native emission peak wavelength, which is 442.700nm; this confirms without a doubt that these are those wily and elusive phosphor red LEDs!

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/45/x21-r3.txt.
This data file has been limited to a spectral response from 410nm to 470nm.

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

Spectrographic analysis of the phosphor yellow LEDs in this light set; spectrometer's response narrowed to a band between 442nm and 452nm to pinpoint native emission peak wavelength, which is 447.650nm.

Spectrographic analysis of the yellow LEDs in this light set; spectrometer's response narrowed to a band between 560nm and 580nm to pinpoint phosphor emission peak wavelength, which is 569.930nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/xmas21-y.txt

Spectrographic analysis of the green LEDs in this light set.

Spectrographic analysis of the green LEDs in this light set; spectrometer's response narrowed to a band between 520nm and 530nm to pinpoint peak wavelength, which is 523.050nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/xmas21-g.txt

Spectrographic analysis of the blue LEDs in this light set.

Spectrographic analysis of the blue LEDs in this light set; spectrometer's response narrowed to a band between 445nm and 455nm to pinpoint peak wavelength, which is 450.470nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/44/xmas21-b.txt

USB2000 Spectrometer graciously donated by P.L.

TEST NOTES:
Test unit was purchased at a Right Aid drug store in Federal Way WA. USA on 11-26-13.

UPDATE: 00-00-00

PROS:
Higher-than-expected intensity lamps for a battery-powered set
Has phosphor yellow LEDs -- these have a less amberish light than ordinary yellow LEDs
Light set's cords are thicker (read, "tougher") than expected
Batteries it needs are easily available and relatively inexpen$ive

NEUTRAL:
Has phosphor red LEDs; I would have not have expected to see them in such a low-cost light set!
Battery box has a somewhat "chintzy" feel especially when empty

CONS:
Product is ***NOT*** submersible

Unknown

Seasonal decorative light string

Reverse conical 5mm LED

20 (5x ea. red, phosphor yellow, green, blue)

N/A

Slide on/off on battery box

Plastic

N/A

2x AA cells

Unknown/unable to measure

Light splatter-resistance only

SANTA KLAUZULE VYPRAZDNOVÁNÍ JEHO JEŠTERKA SE KOMÍN, NE!!!

None

2.08M (6.83 feet) total wire length

82.70g (2.920 oz.) with batteries

China

Unknown/not stated

LED Battery-Operated Christmas Lights *

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