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Does LED light need battery?
LEDs draw very little power so they can run for a long time on a small battery without any issues. There is no need for a bulky wall transformer and a wall plug to light your project. When LEDs get toward there end of life they fail by dimming over time, rather than an abrupt failure of incandescent bulbs.
How long will battery operated LED lights last?
Microdrop LED lights constructed on thin uncoated wire should last over 100 hours with a fresh set of 3 AA batteries or 2 round C-style batteries and standard LED battery light sets with thicker insulation and LED lenses should last about 18-24 hours on a set of 3 AA batteries.
Can you use thermostat wire for LED lights?
With LED lighting I just use thermostat wire. Never had a problem.
How big of a battery do I need for LEDs?
For most small LEDs it is about 20mA-25mA. Then you can calculate the battery size. For most LEDs, at least a 3V battery set (such as 2xAA) is sufficient to drive the LEDs, but again, you may need current-limiting resistors depending on the LEDs and the battery.
What kind of battery do I need for 3V LEDs?
For most LEDs, at least a 3V battery set (such as 2xAA) is sufficient to drive the LEDs, but again, you may need current-limiting resistors depending on the LEDs and the battery. Highly active question. Earn 10 reputation (not counting the association bonus) in order to answer this question.
Can you run four 3V LEDs at the same time?
So, a 12V battery wired to four 3V LEDs in series would distribute 3V to each of the LEDs. But that same 12V battery wired to four 3V LEDs in parallel would deliver the full 12V to each LED – enough to burn out the LEDs for sure! Wiring LEDs in parallel allows many LEDs to share just one low voltage power supply.
What kind of power supply do I need for LEDs?
The 9V battery served as my 9V power supply, one AA battery made a 1.5V power supply and three AA batteries bundled together made a 4.5V (1.5V + 1.5V + 1.5V = 4.5V) power supply. I didn’t use alligator clips on the ends of the wire, but they would have been helpful here.