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by storysandstones on May 6th, 2008

storysandstones

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Using batteries to make a gadget work that's meant to be powered by a car cigarette lighter? They have 12V so I'll need to link up a 9V and two 1.5V (AA) batteries I think, but will the current be right, and do those plugs have + and - terminals?

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Answers. 3 helpful answers below.

  • by Borderlinux on May 6th, 2008

    Borderlinux

    what are you trying to run? Need to know the current draw.

    Yeah...the tip on the ciggy plug is + and the side contact(s) is -

    Also...you can prolly go over 12v since most ciggy sockets are 13-14v when the car is running and devices using them have internal regulators anyway. Heck...chances are good you could run a 6v lantern battery into a 5v regulator and get your device to work if you take it apart and dive in to the circuit...but it sounds like that wouldn't be too good of an idea for you to try at this point.

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  • by Nada Normal on May 6th, 2008

    Nada Normal

    this will work but the power (amperage) will be very low - what are you trying to run?

    No comments. Post one | Permalink

  • by Alice dee on May 6th, 2008

    Alice dee

    I don't think that will work man, you should just get a car battery, or a 12v adapter

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