12volt battery to 5volt miniUSB Answered

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

Tags:12volt usb miniusb 12 volt

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DIY Dave

13 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

Reply 13 years ago

Would the polarity be reversed because it is a charger ?

DIY Dave

Reply 13 years ago

I don't think so, but I am not sure.

Goodhart

Reply 13 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

Goodhart

13 years ago

Even though it will be nothing like an automobile, you are talking some major amperage there.

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12volt battery to 5volt miniUSB Answered

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