what resistors do i need to step a 12V battery down to 3.25V to run a LED light?
I have a 12v battery that runs my fishfinder on my kayak. I am making a LED 360 light and want to use the same power source so I don't have to keep using AA or rechargables. I need to know how to step down the battery. I no longer have my electronics books to look it up.