The best 40V cordless brush cutters
A shortlist of 40V cordless brush cutters for gardeners who want serious cordless power without going up a battery class, ranked by cutting width, blade capability and everyday usability.
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What matters in the 40V class
40V sits above the entry-level 18-20V cordless trimmers, giving enough torque to spin a wider line head or a real metal blade without bogging down. At this level we weigh up cutting width (how much ground you clear per pass), whether the machine is line-only or blade-capable, and whether batteries are included or sold bare — a bare tool can be great value if you’re already in that battery ecosystem, or an unwelcome extra cost if you’re not.
Our picks
The Greenworks GD40BC stands out for its 40 cm line cutting width, one of the widest in this class, which makes short work of open grass and larger lawns. It runs on Greenworks’ open G40 platform, so it’s an easy add if you already own G40 tools.
The Worx WG183E is the odd one out here: a feather-light 2.2 kg line trimmer with AutoFeed and batteries included in the box. It’s superb for easy grass edging, but it’s honest about its limits — it won’t take a blade, so it’s not a true brush cutter. It’s included as the low-effort, low-cost entry point into the 40V PowerShare ecosystem.
The Worx Nitro WG186E is where that same 40V PowerShare platform gets serious: a brushless motor and a 25 cm metal blade let it tackle tall grass and light scrub, and DriveShare lets the motor power other attachments too. It’s sold bare, so it only makes sense once you own (or plan to buy into) the batteries.
Which should you choose?
If wide-area grass cutting is the priority, the Greenworks GD40BC’s 40 cm swath is hard to beat. If you just want the lightest, simplest lawn-edging tool and never touch brush, the Worx WG183E is genuinely pleasant to use. If you need one 40V machine that can move from lawn to light scrub, the brushless, blade-ready Worx Nitro WG186E is the more capable buy of the two Worx models — just budget for batteries if you don’t already own PowerShare packs.
Frequently asked questions
Is 40V powerful enough to replace a petrol brush cutter?
For light-to-moderate grass, nettles and scrub, yes — a good 40V machine with a metal blade copes well. For thick, established brambles or all-day professional use across a large plot, a 45cc+ petrol brush cutter still has more sustained torque and no battery-swap downtime.
What's the difference between the Worx WG183E and the Worx Nitro WG186E?
The WG183E is a line-only grass trimmer — light, easy, batteries included, but not built for brush. The Nitro WG186E is a different tool entirely: brushless, blade-capable and sold bare, aimed at people who need to cut scrub, not just lawn edges.
How long does a 40V battery last per charge?
Runtime depends on the battery capacity and how hard you're working the motor — expect roughly 20-40 minutes of continuous cutting per 4 Ah-equivalent charge, less with a blade fitted than with line. Carrying a spare battery is the easiest way to avoid downtime on bigger jobs.
The tool we recommend
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