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10 February 2021

Top five cordless lawn mowers for 2021

We reveal our pick of the best cordless lawn mowers to buy this year, based on the results of our independent and rigorous tests.
Mowing a lawn in spring
VP
Victoria Pearson

The best cordless lawn mowers will be quick to charge, powerful enough to cut overgrown grass, be easy to use and have a running time of at least 30 minutes.

The worst we've tested will cost a fortune, leave your lawn uneven and take several hours to recharge. 

We’ve pulled out our top five cordless lawn mowers from our tests in the table below. We also reveal the models that you’re better off avoiding. 

Top five cordless lawn mowers

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81%
Best Buy
£350.00
Reviewed

Achieving a test score of 81% this outstanding Best Buy cordless mower is currently the best that we've tested. Its 37 minute run time allowed us to cut a massive 480 metres square with one full charge and it does a good job of cutting all types of grass.

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80%
Best Buy
£675.00
Reviewed

This cordless mower delivers a fantastic cut on all grass types and handles difficult terrain, such as sloping and bumpy ground, well, too. Its self-propulsion and adjustable speed controls make it easy to manoeuvre, and the grass-collection box fills up to an impressive 90% of capacity before it needs emptying.

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78%
Best Buy
£365.00
Reviewed

This Best Buy is a great cordless lawn mower that can cut all types of grass well, and is quiet and easy to use. It can cover a lot of ground on one battery charge, although the slow charging time is a bit of a drawback. It's still a worthy Best Buy, though.

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76%
Best Buy
£425.00
Reviewed

This excellent Best Buy cordless gives an average of 30 minutes mowing time, allowing you to cover 360 square metres with one full charge. It only takes one hour for the battery to recharge too. It cut all types of grass without fuss, and was manoeuvrable with a lot of power for a cordless mower.

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74%
Best Buy
£150.00
Reviewed

At less than £200, this cordless mower is an absolute steal. It leaves an excellent finish on both standard and wet grass, and copes well with difficult terrain. It’s lightweight and manoeuvrable, and the battery lasts for a decent length of time, so one charge should easily be enough to cover a small garden.

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Two cordless lawn mowers to avoid

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You can only tell if a lawn mower is any good by using it to cut grass in several different conditions. This is exactly what we do in our Which? independent lab tests. We cut short grass when it's dry and when it's wet to find out how well the mowers will cope with cutting your lawn, and try cutting lawns on sloping and uneven ground and right up to fences too. 

Not all lawn mowers are great. Here are two models that could leave you feeling underwhelmed, either because our tests show that they don't cut well or because they're tricky to use. 

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43%
Don't buy
£84.95
Reviewed

This corded electric mower may be cheap, but it’s awkward to use and leaves your lawn looking a mess.

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41%
Don't buy
£49.00
Reviewed

This push mower is fine on short, dry grass, but can’t cope with long or damp grass and doesn’t collect the clippings well.

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Why Which? lawn mower reviews are better

Which? tests around 3,300 products every year, from washing-up liquid to cars. 

When testing lawn mowers, we measure:

  • How well each one cuts grass – from short, ornamental lawns to long meadow grass.
  • How long it takes to cut the grass.
  • How well the mower collects the grass clippings.
  • How neat it leaves the lawn edges.
  • How smart the finished lawn is. 
  • Our experts also rate each lawn mower on how easy is it to use. 

Not found the lawn mower for you? Head straight to our best lawn mowers


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