Help - I need a design for a 6 volt, 700 mAmp dc power supply



I want to build a sturdy, portable dc power supply to plug into my MP3
player that has issues with charging its internal battery. It works
just fine with the AC/DC adapter but want my player to be "portable"
again.

Since I'm just now learning basic electronics I would rather build a 6
volt, 700 mAmp power supply powered off of one or more rechargeable
batteries than wait until I know enough to repair the mp3 player (if
ever).

Any pointers/designs anyone wants to share?

Thanks.

.



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