Question About The Default Power Plug.

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I'm talking about the green and black plug that you connect to the battery holder. By default is the center positive or negative?

Sorry to ask such a basic question but, I tried searching and couldn't find the answer.

Thanks

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USA

#1 Aug 2013

Seems that I remember positive.

United Kingdom

#2 Aug 2013

Yes it is positive.

USA

#3 Aug 2013

It's also referred to as a 2.1mm plug.

USA

#4 Aug 2013

Thanks Guys