inputs.text: wanted - bought keep laptop charged truck fine far fan loud reviewers stated not cannot even hear unless trucks not running radio turned maybe sensitive hearing faulty unit not bother least concern one time used usb port phone started running hot may due connection problehem not due power inverter hestitate even mention keep eye usb devices use make sure update 11612since made initial post opportunity plug phone usb port several times not run hot must operator error first time changing rating four stars five cannot see holding mistake apparently made product highly recommend would definitely buy