This is was a 12 volt car charger for a Li-Ion cell phone battery and at 12v put out twice the voltage of the original charger. I also wanted to charge the camera from the USB port so I would not have to use a wallwort. Using a power supply, built from an old PC power supply in a previous project, I hooked the charger up to 5 volts and got the perfect charging voltage for the battery I planned to use.
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