If you're after the best cordless lawn mower, you're in the right place. Lighter weight, quieter, and more environmentally friendly than petrol models, cordless designs are the easy-to-store, easy-to-use option for small and medium-sized gardens – although a couple of the models on our list will do as good a job with large lawns, too.
Need more help choosing a cordless lawn mower? Scroll down to the bottom of this article to get advice. Looking for a petrol or robot lawn mower instead? You'll find what you need in our best lawn mower guide.
The best cordless lawn mowers for 2021
The latest cordless model from Gtech rightfully takes our top spot.
Adjustable blade heights
This is a seriously sensitive machine, with the blade height adjustable in increments of 10 millimetres, between 30 and 80 millimetres, making it the best lawn mower for achieving exactly the grass height you want.
Large grass collector
It also features a large, 50-litre grass collector, which means you won't have to empty it all the time, even if you lawn is quite large.
Lightweight, easy and quick to charge, this lawnmower will keep going continuously for a full 40 minutes – enough for most lawn sizes. The only thing to bear in mind is that it's not quite compact enough to fit into a very tight corner.
Buy the Gtech Cordless Lawnmower 2.0
Great for medium sized lawns
If you have a lawn that's bigger than average but not huge, you should check out this Einhell model. It's lightweight and designed to be gentle on the grass, with larger wheels preventing flattening.
Sturdy and reliable
There are five adjustable settings for grass of between 25-65 millimetres, and the lawn mower itself is well made and feels reliable and sturdy.
Long charge time
The only downside is the somewhat long charge time for the batteries, with the run time that's not very long.
Buy the Einhell GE-CM 33LI Power X-Change Cordless Lawnmower
If you like to leave it a while between mowings, then the Duramaxx model is for you.
Covers large areas
Cutting up to 500 square metre on a single charge, this lawn mower has six adjustable settings of between 20 and 80 millimetres, making it suitable for even seriously overgrown lawns.
The security key means you can safely leave this lawn mower out without the kids accidentally using it, and the operation is very simple, at the push of a button.
The downside? This is on the heaviest models on our list, so won't be suitable if you were looking for something lightweight.
Buy the Duramaxx DM40LM41 40v Cordless Rotary Lawnmower
If you want something compact and lightweight for a smaller lawn, the the Karcher should definitely be on your radar. It's fairly lightweight and has comfortable foam handles, and will cut grass up to 70 millimetres tall.
Short battery life
You won't get much more than half an hour out of the battery (which then takes quite a long time to charge), so we wouldn't recommend this lawn mower for larger gardens.
Buy the Kärcher LMO 18-36 Push Cordless Battery Lawn Mower
If your lawn tends to get covered in leaves, then this Bosch model is the solution: it works as a leaf collector as well as a mower, making it the perfect all-in-one tool for tidying up your garden while mowing the lawn.
This model is fairly bulky, which means that if you have an irregularly shaped lawn, you might need something lighter. But it will leave standard-shaped lawns immaculately neat and tidy.
Buy the Bosch UNIVERSALROTAK 36-550 36v Cordless Rotary Lawnmower
What is the best cordless lawn mower?
The best cordless lawn mower is the Gtech Cordless Lawnmower 2.0. It's suitable for cutting tall or short grass, is relatively lightweight and easy to use, and has a grass collector box that will take an impressive 50 litres of grass. It's also quick to charge – one hour, and you're good to go.
How to buy the best cordless lawn mower
Battery life vs. charge time
This is one of the most important aspects of a cordless lawn mower to know when buying one. How long does the battery lasts, and how long will it take to recharge? As a rule of thumb, if it takes much longer to charge the battery than the battery life itself, then you're looking at a small garden mower only.
Grass collector size
This is important if you're not a fan of emptying the grass box after every mow, but bear in mind that the bigger the grass collector capacity, the heavier and bulkier you mower.
Blade height adjustability
As a rule, you wouldn't want to cut grass that's shorter than 20 millimetres or much longer than 65, although if you like leaving it that little bit longer between mows, then an upper blade height of 80 millimetres is a bonus.