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 Dave10 years ago
I think you could just install a 12volt plug (like in a car) and use an ipod charger to make it 5volts.
Goodhart DIY Dave10 years ago
Would the polarity be reversed because it is a charger ?
DIY Dave Goodhart10 years ago
I don't think so, but I am not sure.
Goodhart DIY Dave10 years ago
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
Goodhart10 years ago
Even though it will be nothing like an automobile, you are talking some major amperage there.