Simple question from dad with no knowledge lol. I’m customizing my sons bike and picked up some crappy bicycle lights from the dollar store. Each one requires 3v (two AA batteries). What size battery pack would I need to run all three lights from? Planning on adding a switch to make it seem cooler. I know it’s basic in a group like this but I’m eager to learn and apply to new projects
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Sourav Gupta
Joined February 12, 2018 696Monday at 02:11 PM
Led Lights with 3V rating requires 3V batteries.
If you connect in parallel, the voltage requirement is same but the current requirement will increase.
Thus choose a 3V battery and use any switch that suits for your bicycle. Just remember to use a larger 3V battery and connect 3 LEDs in parallel.