The 7 Best Cordless Lawn Mowers for Gardens of All Sizes

Mountfield Electress 34 Li Cordless Lawn Mower
(Image credit: Mountfield)

Owning one of the best cordless lawn mowers is essential for keen gardeners, especially ahead during spring and summer when lawns flourish, as they can take the hassle out of the mowing process.

Lawn mowers are a vital part of perfecting your garden design, but the biggest pain of using corded mowers for many people is grappling with the power cable. Cordless lawn mowers, meanwhile, 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 than corded models, 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 and get your garden looking pristine.

Best Cordless Lawn Mowers

You can trust Homebuilding & Renovating. Our expert reviewers spend hours testing and comparing products and materials in order to help you choose the best for your home and garden. Find out more about how we test.

Einhell GE-CM 18/33 LI

(Image credit: Einhell)

1. Einhell GE-CM 18/33 LI

The best lawn mower for beginners

Specifications

Power: 18V
Cutting height: 25-65mm
Grass box: 30L
Weight: 10kg
Mulches: No

Reasons to buy

+
Lightweight
+
5 cutting heights
+
Wide wheels
+
Integrated carry handle

Reasons to avoid

-
Battery life could be longer

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.

The mower comes with the battery and charger included, but you can buy the bare mower if you already own any Einhell Power X-change products. 


Kärcher LMO 18-33

(Image credit: Kärcher)

2. Kärcher LMO 18-33

The best cordless lawn mower for smaller gardens

Specifications

Power: 18V
Cutting height: 35-65mm
Grass box: 35L
Weight: 11.3kg
Mulches: Yes

Reasons to buy

+
Efficient performance
+
Comfortable to use
+
Display indicators
+
Budget-friendly

Reasons to avoid

-
Battery needs to be firmly pushed in

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 'communicates' 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.

You can buy the bare tool or buy it with the battery, which has an average run time of 40 minutes and should last around four cutting sessions in smaller gardens. It takes around two hours to fully charge.


Mountfield Electress 34 Li Cordless Lawn Mower

(Image credit: Mountfield)

3. Mountfield Electress 34 Li Cordless Lawn Mower

The best mower for medium-sized gardens

Specifications

Power: 20V
Cutting height: 25-75mm
Grass box: 35L
Weight: 11.61kg
Mulches: No

Reasons to buy

+
Good battery life
+
Lightweight
+
Easy to manoeuvre

Reasons to avoid

-
No foldable handle

The Mountfield Electress 34 Li is a no-nonsense, well-built cordless lawn mower that will trim your urban garden lawn quickly and efficiently. 

It's suitable for cutting gardens up to 250m² in size, Mountfield says, and its long battery life will certainly assist with this, but its power is much more suited to medium-sized gardens. 

It's lightweight and easy to manoeuvre – a couple of traits you need in any mower – which makes cutting grass a pretty painless experience. And a simple lift and push start is all that's needed to start up the motor. 

While Mountfield quotes a battery life of 30 minutes depending on conditions, our reviewer says they are underselling themselves and that after three mowing sessions – which took around 40-45 minutes in total – there were still two out of four bars showing on the battery. 

Read our full Mountfield Electress 34 Li Cordless Lawn Mower review.


Worx WG779E.2

(Image credit: Worx)

4. Worx WG779E.2

An all-rounder with impressive cutting power

Specifications

Power: 40V
Cutting height: 20-70mm
Grass box: 30L
Weight: 11kg
Mulches: Yes

Reasons to buy

+
Powerful 
+
Intellicut technology
+
6 height adjustments

Reasons to avoid

-
Batteries could be more reliable

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. 


Gtech CLM50

(Image credit: Gtech)

5. Gtech CLM50

The best for larger-sized lawns

Specifications

Power: 48V
Cutting height: 30-80mm
Grass box: 50L
Weight: 13.5kg
Mulches?: No

Reasons to buy

+
Very powerful 
+
Low energy, high-efficiency
+
Automatic variable speed

Reasons to avoid

-
Pricey

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. 

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. And of course, it is supremely powerful - the 48V battery is the highest on the list. 

The average run time is roughly 40 minutes and it takes around an hour to charge.


Bosch UNIVERSALROTAK 36-550 36v Cordless Rotary Lawnmower

(Image credit: Bosch)

6. Bosch UNIVERSALROTAK 36-550 Cordless Rotary Lawnmower

The best for collecting leaves

Specifications

Power: 36V
Cutting height: 25-70 mm
Grass box: 40L
Weight: 15kg
Mulches: No

Reasons to buy

+
Doubles up as a leaf collector
+
Quiet

Reasons to avoid

-
Not suited to larger gardens
-
Bulky

This Bosch mower is a dream solution for homeowners who find their gardens are regularly covered in leaves.

The specially designed LeafCollect blade collects and shreds leaves as well as cutting grass, making it a convenient two-in-one mower for keeping your lawn looking pristine. 

It's also very quiet, which from looking at it - it's pretty bulky - you might not expect. But the ProSilence features reduces sound by up to 30%, Bosch says. 

It has six adjustable cutting heights, ergonomic handles and comes with a 4.0ah battery and charger. One full charge takes around two hours and it will run for around 50-60 minutes once charged.  


Hyundai HYM510SP

(Image credit: Hyundai)

7. Hyundai HYM510SP

The best petrol mower for heavy duty tasks

Specifications

Power: 4.2kW
Cutting height: 25-75mm
Grass box: 70L
Weight: 38.7kg
Mulches: Yes

Reasons to buy

+
Low emissions
+
Easy to start and use
+
Quick release grass box
+
Huge collection box

Reasons to avoid

-
Heavy
-
Fuel tank will need refilling

The Hyundai HYM510SP is one of the best petrol lawn mowers, and well worth considering if you need a low-maintenance, high-performance mower for a large garden or lawn. 

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: 

Battery life

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 (m²) of your lawn will need to be maintained: if your garden is between 50-150m² then this is considered to be small to medium, while more than 150m² is considered large.

Collection

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.

Mulching

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.

How we Test Cordless Lawn Mowers

There's a lot to consider when buying one of the best cordless lawn mowers, and the Homebuilding & Renovating team is getting hands-on experience with the products in this buying guide to help you feel confident in choosing the right mower for you. 

In our ongoing independent reviews we are testing the ease of use, battery life and cutting power to gauge each mower's efficiency, and assessing key factors including value for money and which sized garden a mower may be best suited to. We’re also reviewing everything in-between from the size of collection bags to which households will most benefit from buying a specific cordless lawn mower. 

Our team is passionate about DIY and home improvement (which probably won’t be a surprise) so we already have detailed knowledge about the brands that make these lawn mowers. Moreover, we have taken into account user reviews when compiling this buying guide, and gleaned key information from our sister sites such as Real Homes and Ideal Home to help you find the best cordless lawn mower for your home.

Find out more about how we test products. Here are our Homebuilding & Renovating cordless lawn mower testers:

Steve Jenkins
Steve Jenkins

Steve joined the Homebuilding & Renovating team in 2022 and has 20 years of experience in transforming and renovating homes. He is an avid DIYer who specialises in painting and decorating, but has strong all-round building skills, having previously worked in the industry for 10 years. He has tested the Mountfield Electress 34 Li Cordless Lawn Mower for Homebuilding & Renovating.


Jack Woodfield
News Editor

Jack has worked in journalism for 11 years and is the News Editor for Homebuilding & Renovating, a role he has had since 2019. He 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 hydrogen heating. In 2021 he appeared on BBC's The World at One to discuss the government's planning reforms. 


He enjoys testing new tools and gadgets, and having bought his first home in 2013, he has renovated every room and recently finished a garden renovation.