12volt battery to 5volt miniUSB

I'd like to be able to charge my MP3 player on my motorcycle, running off the power of the motorcycle. The motorcycle will put out 12.1 volts or so off, and around 14 volts running. What is required to bring that down to 5 volts? Will a simple voltage regulator be enough? The MP3 player will be controlling the amount of current going to it, so I don't need to worry about that, right? Thanks Jake

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DIY Dave9 years ago
I think you could just install a 12volt plug (like in a car) and use an ipod charger to make it 5volts.
Would the polarity be reversed because it is a charger ?
I don't think so, but I am not sure.
Well, if you ran a current through a battery, in the "forward" (as the battery is marked) direction, it will drain the battery. So I am assuming that a charger reverses this
Goodhart9 years ago
Even though it will be nothing like an automobile, you are talking some major amperage there.