Flymo 18V UltraTrim 300 Cordless Grass Trimmer with 30cm cutting width and adjustable handle
Product description
If you’re after cordless grass trimming that doesn’t feel like a chore, the Flymo 18V UltraTrim 300 is a sensible mid-range choice on paper. It leans into practical things: a lightweight build, an adjustable handle for comfort, and a line system designed to keep cutting power where it matters.
That said, cordless strimmers are always a bit of a trade-off versus more powerful options wired to the mains. You’ll get the convenience of moving around the garden easily, but if you’re tackling really heavy, overgrown patches every week, you may find it’s better suited to regular maintenance rather than “rescue work”.
The essentials
This Flymo cordless grass trimmer is designed for trimming grass and edging with a 30cm cutting width, so you can cover ground without spending ages doing the same pass. It uses a heavy-duty line and a PowerBoost Technology feature aimed at improving cutting performance in thicker, tougher areas. There’s also a short line indicator, which is handy because running low on line is one of those annoying interruptions that slows you down.
For everyday garden owners, the adjustable ergonomic handle is one of the more underrated details. Being able to tune the working position makes a noticeable difference during longer sessions, especially if you’re edging along paths or around borders where you naturally end up in awkward stances.
What you’ll notice in use
The combination of “power boost” plus heavy-duty line is clearly aimed at reducing the moments where a line trimmer starts to feel weak. In thick or slightly matted sections, it’s the kind of design you hope will keep the cutting action consistent rather than forcing you to go over the same strip repeatedly.
The lightweight design is the other big day-to-day factor. Weighing 2.3 kg means it’s easier to control one-handed while you pivot and angle the head for edging. Picture yourself doing a 10–15 minute tidy-up along the edge of a lawn border: you can keep moving steadily without feeling your arms and wrists get tired halfway through.
A small but useful touch is the short line indicator. It doesn’t make the job faster on its own, but it helps you plan—so you’re less likely to notice the line has nearly run out only after you’ve already started.
The best bits (and where it can fall short)
On the plus side, this trimmer has a clear focus on usability: - Lightweight handling (2.3 kg) for easier manoeuvring - Adjustable handle for comfort during trimming and edging - Cutting power support via PowerBoost Technology - Heavy-duty line for demanding trimming tasks - Short line indicator to help you manage line levels
Where it can be less convincing depends on your garden. If you regularly deal with dense, long grass that’s been neglected for a while, cordless line trimmers sometimes struggle to match the pace and persistence of more powerful alternatives. You may still get results, but it can end up being slower and more repetitive than you’d like.
Also, the value proposition is partly tied to the idea of “battery + charger included”. If you already have Flymo 18V batteries, you’d usually want to check compatibility and what extra battery/charging setup you actually need—though the listing here says a battery and charger are included.
Who it makes sense for
It’s a good fit if you want a cordless grass trimmer for regular maintenance, quick edging jobs, and keeping borders looking neat without dragging cables around. It also suits anyone who prioritises comfort—adjusting the handle is especially useful if more than one person in the household will use it, or if you tend to work longer than 10 minutes at a time.
It may not suit you if you’re after a “cut through anything immediately” solution for heavily overgrown areas. In that situation, you might prefer a different approach that’s designed for heavier workloads more consistently.
Tech specs
- Type: Cordless grass trimmer (18V)
- Cutting width: 30cm
- Weight: 2.3 kg
- Handle: Adjustable ergonomic handle
- Cutting support: PowerBoost Technology for thick/tough areas
- Line: Heavy-duty line designed for demanding trimming tasks
- Line management: Short line indicator
Should you buy it?
Worth considering if you want a lightweight, cordless trimmer that’s built around everyday trimming and precision edging, with features aimed at maintaining cutting performance in tougher patches. The 30cm cutting width is a practical choice for covering normal garden edges efficiently, and the adjustable handle plus short line indicator make it easier to stay comfortable and keep the job moving.
Better avoided if your priority is clearing very overgrown grass in one go, or if you expect a line trimmer to behave like a high-powered brushcutter. For most regular upkeep tasks, though, it looks like the kind of battery trimmer you can live with—and actually use—rather than one that gathers dust.
Quick FAQ
Does the adjustable handle help with edging?
It’s designed specifically to let you customise your comfort during use, which should make edging and border work easier to control for different heights and working angles.
Is it aimed at thick grass?
The listing mentions PowerBoost Technology to enhance cutting power in thick, tough areas, plus heavy-duty line for demanding trimming tasks.
How do you know when the line is running low?
A short line indicator is included to help you manage and maintain line levels before it becomes a full interruption.
How heavy is it to carry and manoeuvre?
At 2.3 kg, it’s relatively light for a cordless line trimmer, which should help if you do repeated passes around edges and borders.
What comes with it?
The product title states that a battery and charger are included.