The main advantage of a cordless hedge trimmer is that you have complete freedom of movement. You don't need a power supply and you don't need to struggle with extension cords. In general, a cordless hedge trimmer is suitable for small to medium-sized hedges. Not every hedge trimmer is suitable for thick branches. Have a look at the maximum branch thickness to decide if the hedge trimmer you had in mind is suitable for your trimming job. A telescopic tube extends your hedge trimmer. This way, you can easily trim the top of your hedges.