http://www.petereport.com/led-light/
How many volts are needed to run 1 LED light?
I saw a field LED Mini works with 4 AA batteries (1.5 volts through AA batteries), and the light field of 7 white LED lights inside. 1.5 x 4 = 7 (V), which means that each LED requires 1 V? How much time is consumed electricity from the battery?
Most LEDs require about 1.5 volts. Except white and colored slightly Others who need about 3.8 volts. The required voltage for each LED if true, but vary from one type to another and color to color. However, LEDs do not draw more current, and therefore can be executed in parallel so that single AA battery can light several LEDs. LEDs do not have much resistance, and almost always need a resistor in the circuit to limit the power to be delivered LEDs (Ohm's law U = IR). If a battery is used to power an LED without resistance, is implicitly based on the internal resistance of the battery itself, and the result is a brightness which depends largely on how the battery is fresh. Many LEDs produce its maximum brightness at 30 mA, but a little LED light produces a much lower energy, even a tenth of milliamperes. So if you have enough voltage, only a battery or series of batteries is much more power an LED. There are LEDs of high efficiency to produce a very bright light at 10 milliamps, but there is an LED that can be used much more power than 30 mA as well. And some are much brighter than others. A type AA alkaline battery should produce more than 2500 milli-amps of current, so that if an LED design was, say 25 mA, which lasted 100 hours, ten LEDs lasted about 10 hours, and so on. For more information about the ability of different types of batteries can see http://en.wikipedia.org/wiki/Battery_ (electricity)
Litepanels Micro LED Light vs LCD4Video R-50
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