What Pylonracr said. To expand a bit:
If the wire is fat enough, the operating voltage low enough, and the amp draw low enough, then there is practically no loss due to longer leads. Play with the calculator in the link below and you will see that even at 10 FEET, the voltage drop on a 7.4 volt 18ga line drawing 3 amps is less than 1/2 volt.
In in other words, use good fat wire and there are no worries.
http://www.calculator.net/voltage-dr...res=60&x=0&y=0