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I am trying to charge my 3DS without the original charger via USB cable (by stripping the wires). On the back of the 3DS, which metal contact is positive and which is negative?

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The 3DS claims to take 4.6V input (as marked on the case and the charger). 5V input may cause damage or shorten life. –  Kevin Reid Jul 22 '12 at 5:03
Didn't answer my question, but I checked it out and USB input should be fine. –  Pachow Studios Jul 22 '12 at 5:11

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