how is the led powered, with batteries or cord? what size and how many?
1955184
Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the name "The Experimentalist." Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the... » Read More Each of the two lights is powered by two CR1620 lithium button cells. A light will give close to 10 hours service off one set of batteries before it begins to gradually dim. The bad news is that it is extremely hard to replace the cells. It may be easier to throw the thing away and start over when the batteries run down. BTW, you don't really need to use both lights at once because you can only use one eye at a time (see the reviews for more info). Your question has prompted me to try to actually change the cells. After I sort out a procedure, I'll add it to my review, which is under the name "The Experimentalist." « Show Less
1564642
It has a power cord. I did build a timer circuit to time the lights in the proper sequence. It works well.
64433
it runs on batteries. you can buy an additional power cord if you like but not necessary.
2126722
it doesnt need batteries. there are no led's. that is another accessory a flashing led light for the hearing impaired.
31729
I believe lithium rechargeable battery. This is not that large. It is about 5 inches tall. Very Bright
913545
It has 3 LED bulbs, there not super bright but get the job done in dark places where low light is needed. The device charges faster when plugged in but is very applicable when your away from electricity for a while. You can litterly charge your devices then leave the device in the sun on your back pack or whatever.
882639
Mine came with a very short lead and without a plug. I replaced it with a store bought cord and plug. I'm using mine with 120 VAC household current and it works fine. I can't answer the lumen output question. For a 30 watt LED it isn't that bright. More like a 150 watt incandescent.
132008
It's a 12 volt system you can convert voltage into amps with an easy Google search. Another way is to tack it out with a voltage meter when the system is running it will also depending on the length of time on. I've left mine on overnight several times without any problem the next day. LED systems consume the less amount of power. Hope this helps
2144237
It is corded - the little battery in it only helps to maintain the time in the event of a short power outage; the light won't work during a power outage. So, it must be plugged into the wall to work.
1805462
Just what you see in the picture. You'll have to buy a battery or you can purchase the cord seperately that plugs in.
1608917
There is no battery. The unit is designed for inline 12 volt current. There is no need to take it apart. There is a positive and negative lead wires protruding from the back. There are also two mounting screws that you screw in then attach the light by turning it on the screws.
33556
That's funny, I didn't notice that when I ordered mine. Must just be a typo. The one they sent me is a headlight and has a battery-pack that plugs into the cord. Pretty decent light, but you have to make sure to unplug it from the battery when you're not using it or it will drain the battery very quickly.
1094354
12V DC. Yes, I have converted totally to LED's and the low power consumption of them really brightens up everything.
1322839
The led light comes with a US transformer that is 120V standard plug. The cord is about 8' long.
1899438
The crayola light designer I have, is powered by D batteries. It did not come with any sort of plug in.
534281
This model has 3 cords. It has 1 to operate the lunar LEDs and the other 2 operate separate sets of fluorescent lights. It has 4 lunar LEDs and 4 fluorescent bulbs in all.
713324
batteries are not included. voltages specifications you need to turn one of these LED's are on these characteristics.