Included in this guide:
Owning one of the best cordless lawn mowers is essential for gardeners, especially in the spring and summer when lawns tend to flourish, as they can take the hassle out of the mowing process.
The biggest pain of using corded mowers for many people is grappling with the power cable, whereas cordless lawn mowers simply require a quick battery charge (unless you opt for a petrol mower) then you're good to go.
Because they're lightweight, cordless lawn mowers are also much easier to use, especially on smaller-to-medium-sized lawns. They're generally easier to store too.
Use our guide to help you find the best cordless lawn mower for your garden.
(MORE: Best Cordless Drills)
Best Cordless Lawn Mowers
1. Kärcher LMO 18-33
The best cordless lawn mower for smaller gardens
Power: 18V | Cutting height: 35-65mm | Grass box: 35L | Weight: 11.3kg | Mulches?: Yes
You may know Kärcher as the makers of some of the best pressure washers, but they also do the best cordless mower for small gardens too.
The LMO 18-33 is lightweight, performs efficiently, and has an easily adjustable foam handle which feels great when you're choosing between four cutting heights. It's also really easy to work the power levers.
It is great for 'communicating' with you too. A handy filling level indicator lets you know when the grass collection box is full and needs emptying, and there's a useful LCD screen that displays the remaining battery juice as a percentage and as a countdown in minutes when charging.
The 18v 5Ah battery has an average run time of 40 minutes, which should last you around four cutting sessions in smaller gardens. It takes around two hours to fully charge.
2. Einhell GE-CM 18/33 LI
The best mower for beginners
Power: 18V | Cutting height: 25-65mm | Grass box: 30L | Weight: 10kg | Mulches?: No
Einhell's cordless lawn mower is a favourite for those new to gardening. It's a no-fuss, stress-free mower which has wide wheels to help with manoeuvring, which leaves less wheel tracks on the lawn. Plus it's equipped with a brushless motor so there's less mechanical wear and tear.
It is best suited for smaller gardens no larger than 200m², and because it's so lightweight it's great for cutting longer grass. The average run time is around 30 minutes.
A five-level cutting height adjustment lets you choose your desired grass length, and the long handle has three settings to ensure comfort and ease of use. When you're finished, the long handle folds down to save you storage space - and there's an integrated carry handle too.
You can buy both the mower with the battery and charger, depending on if you already own any Einhell Power X-change products.
3. Worx WG779E.2
An all-rounder with impressive cutting power
Power: 40V | Cutting height: 20-70mm | Grass box: 30L | Weight: 11kg | Mulches: Yes
While cordless mowers can sometimes fall short for power, Worx's cordless mower bucks the trend. It uses two rechargeable 20V batteries simultaneously, for extra power and runtime, so it's easy to tackle overgrown lawns.
This mower uses something called intellicut technology which we really like - essentially it adjusts your speed and power automatically, providing constant and efficient cutting power depending on how dense your grass is.
There's also the option to mulch, and the generous battery life of 40 minutes is another plus - more than enough for smaller gardens, and suitable for medium-sized lawns. You could even buy spare batteries to give yourself double the run time for longer lawns.
4. Gtech CLM50
The best for medium and larger-sized lawns
Power: 48V | Cutting height: 30-80mm | Grass box: 50L | Weight: 13.5kg | Mulches?: No
The 42cm cutting deck of this mower is all the more impressive when you consider it weighs just 13.5kg. It's one of the lightest cordless mowers around for cutting medium-sized lawns.
It's hard to look past the price, but this is a high-quality mower. It uses a snazzy carbon steel blade which has a counterweight on the other side, so it uses less energy while maintaining efficiency. And the automatic variable speed of the motor means it will speed up dramatically when cutting longer grass - a very useful feature which will take the strain out of mowing larger gardens.
The average run time is roughly 40 minutes and it takes around an hour to charge.
5. Hyundai HYM510SP
The best petrol mower for heavy duty tasks
Power: 4.2kW | Cutting height: 25-75mm | Grass box: 70L | Weight: 38.7kg | Mulches: Yes
The Hyundai HYM510SP is the best cordless petrol lawn mower, and well worth considering if you need a low-maintenance, high-performance mower for a large garden or lawn.
(MORE: Best petrol lawn mowers)
The HYM510SP features six easily adjustable cutting heights and has a huge cutting width of 51cm which makes it well-suited for trimming large gardens and lawns.
It's easy to start, which is achieved through a contactless ignition system, and Hyundai's four-stroke engine not only improves the torque but is designed to reduce noise and air pollution, making it an economic and low-emission mower.
The huge 70L grass collection box has a quick release, allowing you to easily empty your glass without spillage, and for easy storing the handles can fold down over the mower.
How to Buy the Best Cordless Lawn Mower
Once you've decided a cordless lawn mower is right for you, you'll need to consider a few other things before you buy, such as:
The lithium-ion batteries for cordless mowers are relatively quick to charge and provide between 25-60 minutes of mowing time, which is plenty long enough for the average UK garden. For larger gardens, look for longer battery life.
Size of lawn
The cutting widths of mowers will differ, and some mowers will be more effective on larger gardens than on smaller gardens, and vice versa.
Before you buy, make a rough estimation of how many square metres (sqm) of your lawn will need to be maintained: if your garden is between 50-150sqm then this is considered to be small to medium, while more than 150sqm is considered large.
The larger your collection bag, the longer you can mow for. Therefore buying a mower with a larger bag (50L and larger is best) will prove valuable when mowing larger gardens.
Some cordless lawn mowers will let you choose between collecting the grass cuttings in the 35-litre grass catcher box or spreading them evenly as you go along using the mulching plug, naturally fertilising your lawn.
More Best Buys for Regular Gardening Jobs
- Easily clean outside up with the best pressure washers
- Keep your gardens and pathways tidy with the best leaf blowers
- Tidy up your garden with the best strimmers, or browse the best cordless strimmers
- Spruce up your bushes and shrubs with the best hedge trimmers
- Say goodbye to garden waste with the best garden shredders
Jack is News Editor for Homebuilding & Renovating, and strives to break the most relevant and beneficial stories for self builders, extenders and renovators, including the latest news on the construction materials shortage and planning reforms. Having bought his first home in 2013, he and his wife have renovated almost every room and recently finished a garden renovation.
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