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How Many Leds Can A 9v Battery Power. 10 white LEDs on 9 V battery. Also question is can a 9 volt battery power a light bulb.
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These will drop about 34 V each and 68 V in total. A 9V battery has skinny AAAA cells inside that are too small to power an LED for any reasonable length of time. From the datasheet find the forward voltage and the current.
9 volt battery LEDs 2 volts each.
6V and power supply available is 9V then you can connect 5 LEDs. As a rule of thumb we usually use 20 mA as a guideline for a single LED at full brightness and each color pixel contains three LEDs one each for red green and blue for a total of 60 mA per pixel when displaying white at full brightness. He states that each group of 3 LEDs runs at 17mAh. But you dont need to worry about the math.
