The most important advantage of a cordless leaf blower is that you have complete freedom of movement. With a cordless leaf blower, you don't have to think about whether or not you have a power outlet nearby and you're not tied to extension cords. In addition, a battery-powered leaf blower is usually a lot quieter than its gasoline-powered counterparts. Some leaf blowers have a suction and shredding function, so you don't have to rake the leaves together after your job.