The Bosch ART 23-18 Li has an 18-volt 2.5Ah Li-ion battery. That means you're completely free to move around with this battery-powered trimmer. It has a cutting width of 23 centimeters and cuts using 1 small plastic bade instead of the traditional wire spool. The advantage is that it allows you to trim more precisely. On top of that, it saves energy. The head and the pole of the ART 23-18 Li are adjustable, so you can work with a trimmer between 80 and 115 centimeters in length and neatly cut the edges of the lawn. Thanks to the extra handle, the ART 23-18 Li is also very easy to control.