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HOW MANY 5MM WHITE LEDS CAN BE CONNECTED TO A 12V BATTERY???

I wanna use some 5mm white leds as a head lamp for my bike...
The battery is 12v
So how many leds colud be connected for a bright light and also tell if it is to be connected in series or parallel for longer battery life

iceng5 years ago
The big question is what voltage and current rating are your LEDs,
then we can answer your inquiry.

The ones I last used were 22LEDs 3.2VDC @ 20ma  Solved here.
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