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A detailed buying guide: how to choose a cordless grass trimmer.
This section covers 18–20 V, 36–40 V and 48–82 V class cordless grass trimmers and brush cutters with line or blade heads. They are used for cutting grass along lawn edges, around fences and trees, on slopes and in hard-to-reach places, and for clearing weeds and undergrowth. With no cable or fuel, a cordless trimmer is light, quiet and easy to start. For a comparison with petrol models, see how to choose a petrol trimmer, brushcutter, hedge trimmer and pole pruner.
Light trimmers are designed for lawn edges and soft grass, while powerful brush cutters handle tall grass, weeds and young undergrowth. An 18–20 V model is enough for a home garden, 36–40 V for larger areas and 48–82 V for professional brush cutters. See how to choose a cordless tool.
Cutting width is usually 23–38 cm: a wider swath speeds up work but uses more energy. Line (1.4–2.4 mm) suits grass, while a metal or plastic blade handles thick stems and undergrowth. Automatic or bump-feed line advance saves time.
Trimmers with a bottom-mounted motor are light and handy for edging, while top-motor, straight-shaft models are more powerful and robust. A telescopic shaft, an adjustable auxiliary handle and a shoulder strap let you fit the trimmer to your height. See tool ergonomics, weight, and safety systems.
18–20 V trimmers with a 2–4 Ah battery usually run for 20–40 minutes, enough for an area of up to a few hundred square metres. 36–40 V or twin-battery models suit larger areas and blade work. See cordless tool voltage (V) and battery capacity (Ah).
A brushless motor gives higher speed, longer runtime per charge and less maintenance. Speed control lets you save the battery on light grass and switch to maximum on dense growth. Read what is a brushless motor.
If you already own TOTAL, DYLLU, EMTOP, Makita or DeWalt platform batteries, choose the trimmer without a battery and share them with other garden tools. For a first purchase, a kit with a battery and charger is better value. Read what is a unified battery platform.
Cordless trimmers typically produce 80–95 dB, noticeably less than petrol models. This matters when working in residential areas and early in the morning. See what is noise level in db.
Check the guard size, protection against accidental start-up and, for blade work, a shoulder harness. Wear goggles, closed shoes and long trousers and clear stones from the area beforehand. Read how to use cordless tools safely and tool safety systems and their purpose.
At ToolsArmenia you can compare cordless grass trimmers by cutting width, line or blade, voltage, battery capacity, motor type and weight and choose the right model for your garden.
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