U CAN BUY 12V POWER PACKS FOR AROUND £14, LAST FOR AGES WHEN CHARGED UP, THEY ARE USED IN CARS IF URE BATTERY IS FLAT U CAN START UR CAR OFF THEM, SOME EVEN BLOW UP UR TYRES, SO THERE IS NO PROBLEM WITH ETS FOR THE WANT OF ELECTRICITY AT UR LOFT, I RUN MY CB OFF IT FROM MY SHAD, LOTS OF US HAVE CBs ON RACE DAYS SO WE KNOW WHATS GOING ON AND WHO HAS WHAT,