Cordless Battery Powered Mowers
The Latest and Best
Tested and Reviewed by Fred-in-the-shed
Updated 9th June 2021
This page is for UK based gardeners
(Click here for Mowers available in the USA)
Here I am testing the Gtech Falcon, Flymo Mighti-Mo and Bosch Rotak 37Li
Battery Powered mowers have been around for decades. They were originally designed for small lawns, or those far away from mains power.
But they were very heavy like this Webb battery mower I used 40 years ago.
The first version of the Bosch Rotak 37Li - tested in my garden in 2007, and still working.
Today, thanks to new battery technology, cordless mowers can cut large lawns.
They are also safer as the lack of cable reduces the risk of tripping & electrocution.
On This Page
Flymo Mighti-Mo Cordless Mower
Yardforce 40v Cordless Mowers
Mountfield 48v Cordless Mowers
Bosch 36v Cordless Mowers
Makita 36v Cordless Mower
Self Propelled Cordless Mowers
Cobra 40v Cordless Mower
Gtech Falcon Cordless Mower
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Best Cordless Electric Rotary Mowers
Entry Level Budget Price Cordless Mowers
The Flymo 40v Mighti-Mo
Under Testing, On My Lawn - By The Mighty Sarah
The Mighti-mo is the smallest cordless mower available in the UK. It has a 30cm cut and a run time of 25 minutes.
This size of mower is suitable for lawns up to the size of a tennis court, IF you cut it regularly!
In 2021 the Mighti Mo is replaced by 2 new cordless mowers from the EasiStore range.
The models use two 20v batteries together to make up 40v of power but you can use one to power a hedge or grasstrimmer.
Yardforce 40v 32cm, 34cm and 37cm wide cut models with rear roller
Yardforce are a relatively new Chinese company that is making waves with hi spec mowers at low prices.
I am testing the Yardforce 32cm model which has a small rear roller and most of the features found on better models.
The body looks a bit flimsy but is adequate for domestic use but the battery is top quality Samsung 40v with 2.5 amp hours.
I bought the original (not brushless) model with a grass trimmer and both function well and passed their first year with flying colours.
The 2 new and larger 2021 models have brushless motors so should give more power and squeeze more runtime from the battery.
New 2021 Mountfield 48V Cordless Mowers - with Roller and mulching plate
2021 model Mountfield Princess 48v cordless mower undergoing Fredshed testing.
Mountfield is a long established European mower company who have launched a new range of high spec cordless mowers for 2021.
The big improvement is the brushless motor and 48v Li-ion battery.
The mowers are made in Slovakia and the batteries in Italy.
All models in the 48v Freedom 500 range have rollers for stripes and come with a mulching plate included.
6 models are available, I am testing the 38Li with a 38cm blade for lawns up to 350m square.
There are several features I love about this mower like the grass box that holds the full amount.
The 34li and 38Li come with a single and 2 x 2amp hour batteries and the 43li one has 4 amp hour battery.
Greenworks 40V Cordless Mowers
No Roller but Mulching Plate Included
Greenworks cordless mower under testing on the Fredshed lawn.
Chinese manufacturer Globe Group owns the Greenworks brand and makes many of the batteries for European brands. It also makes several ranges of its own cordless tools from 24-80v. Whilst an 80v mower sounds great I think that for domestic lawns that are reasonably well kept 40v is ideal.
The two 40v Greenworks mowers I tried are keenly priced and both cut very well and are reliable and easy to use.
The 35cm cut version shown above is especially good value with its 40v 2 amp hour battery.
Several models available but the one on the link below is ideal for small lawns up to 350m square, if cut regularly.
Greenworks also make models with 2 smaller 24v batteries and the 2 below both have mulching function.
These are superb mowers and apart from the lack of a roller for stripes are a good alternative to the Bosch Rotak mowers.
Best Cordless Mower ? The Bosch Rotak Li Range
BOSCH ROTAK - VERSION 2 - WITH GRASS COMBS & ERGO HANDLES
(Version 3 with super quiet motor out now -see further down page)
Bosch pioneered the breakthrough in battery technology for mowers
The Bosch Rotak Li launched in 2007 and was the first mower to have a lithium-ion battery.
I had one of the first and it still works today - (but the battery is not 100%)
The Bosch Rotak 37Li was the first cordless mower that I was happy to use without a backup mains mower due to its lightweight but very powerful 36v Lithium Ion rechargeable battery. With its exceptionally well engineered grass box and blade the Rotak cuts AND collects better than any cordless mower I know. The inset front wheels and side fins enable these mowers to cut right to the edge. The plastic body is light but tough and the rear roller is a feature that is missing on most other cordless mowers. An optional mulching panel is available as are special blades for chomping up fallen leaves.
Bosch give a genuine 2 year warranty on their mowers but you can extend this to 3 years for free by registering your purchase within 4 weeks on the MyBosch website.
In 2014 I visited the Stowmarket factory and was very impressed with the attention to detail and quality control measures implemented. Sadly Bosch closed the old Qualcast factory in 2019.
Here I am inspecting the Bosch Rotak production line in Suffolk.
I was impressed how every completed box is weighed so they know that no parts are missing.
DIFFERENT MODELS IN THE BOSCH ROTAK LI RANGE
The Rotak Li was available in 3 sizes of cut, 32cm, 37cm and 43cm cut. After 2020 only the Rotak 32Li will be available.
The 36v battery is similar to the ones used in Bosch professional power tools like builders' drills so it is well tried and tested. My original one has lasted 13 years so far and is still going -but low on capacity. The 32li comes with one 2 amp hour battery for about £300, and is ideal for 200sqm lawns.
Battery charging time for the 32Li takes 90 minutes.
However, as these are Li-Ion batteries you don't have to fully charge them so you can give them a shorter charge without harming the battery.
Bosch 36v Battery Options
The original battery was 2.6 amp hour and then increased to 4 amp hour
2 different Bosch 36v batteries are available - use links below for genuine Bosch 36v batteries.
The Rotak 37Li (370 Li) and 43Li (430Li) have been discontinued.
If you want something similar to the 37Li and 43Li consider this new 2021 Mountfield 48v mowers that also have rollers for stripes -
Bosch Rotak Li - New Generation 3 Models
The new mowers have quieter motors and are available with the standard 36v 2 amp hour and 4 amp hour batteries, and in the largest 850 model 6 amp/h.
Other new features are handle height adjustment and a folding grass box.
They are called the Easy Rotak, Universal Rotak and Advanced Rotak. Only the Advanced models have rear rollers for stripes.
Bosch make great mowers but their model numbers are always confusing.
The numbers in the new ranges relate to how many square metres they can cut rather than blade width.
So the Advanced Rotak 36-750 Li has a 36v motor and can cut up to 750m square of lawn.
However most people don't know their lawn size in square metres and the amount of cutting that can be done largely depends on the length of the grass at the time. So if you need help choosing send me a low res image of your lawn or description.
If you are confused e mail firstname.lastname@example.org for advice on which model is best for you
UK ONLY AND PLEASE GIVE LAWN SIZE, BUDGET OR A SMALL IMAGE OF YOUR LAWN
Blade Options and a Mulching Accessory For Rotak Li Mowers
(37li and 43li models only)
The mulching panel saves time and helps feed your lawn. It is best used for frequent cuts when grass is not too long.
Other Bosch 36v tools that use the same 36v battery system
Bosch give a genuine 2 year warranty that you can extend to 3 years for free by registering your purchase within 4 weeks on the MyBosch website.
Makita 36v Cordless Mowers
This is the Makita DLM430Z being tested on my lawn in Oxford.
There is also a 38cm (15 inch) model and both are usually sold naked without batteries or charger.
Both mowers use the superb Makita 18v batteries that many builders use in their powertools.
They are powered by two 18v batteries and you can chose between 3,4,5 or even 6 amp hour batteries.
If you chose the more expensive 6 amp hour batteries you will be able to cut twice the area you could with 3 amp hour batteries.
So you can chose the batteries to suit your lawn, and use them in 150 other powertools!.
It has single lever easy height adjustment from 25-75mm, easy battery removal and a 50 litre grass box.
These mowers are superb quality and give a great cut too.
The mowers have all the essential features except a roller for striped lawns.
SELF-PROPELLED CORDLESS MOWERS
SELF-PROPELLED OR HAND-PROPELLED CORDLESS MOWERS ? Which to Choose?
Self-propelled means self-driving - it powers itself along, unlike push-along or hand-propelled mowers.
Self propelled mowers tend to be large and are great for wide open lawns but can be awkward to manoeuvre in tight spaces due to the drive controls and extra weight.
Most Self propelled cordless mowers do not have a roller, the few that do tend to cost a lot more.
Battery powered Self-propelled mowers will have at least a 36v Lithium-ion battery and often an even more expensive 60v or even 80v battery.
If you lack some strength or agility then you may actually be better with a lighter weight battery mower that you push.
The Bosch Rotak mowers are light enough for me to push from a wheelchair but strong enough to last 10 years.
If you need a self propelling mower for a REALLY large lawn I would consider petrol until the price of large Li-ion batteries comes down.
I tried the first self propelled battery mower in 2011, the CEL DM20.
It had 2 separate motors, powered by a huge 17 amp hour lead acid battery, the size of a suitcase. Not surprisingly it was quite hard to handle.
Stihl RMA 448 TC is the largest of the 5 Stihl Cordless mowers
The latest and best self propelled cordless mower is now the Austrian made Stihl RMA 448TC that I am currently testing. This model uses a 36v Li-ion battery from the Stihl Pro range and uses one battery to power the drive and blade. It has 2 battery slots so you can keep a spare in place. Using both batteries will cut up to 450 sqm of lawn depending on how level your lawn is and how long your grass is.
I should say that the batteries are made in China but by a company that Stihl partly own.
This is the biggest of the 5 Stihl cordless mowers with its 19 inch (46cm) cut and the fantastic folding, height adjustable, mono handle.
You cant buy Stihl mowers online as they are only sold from machinery dealerships where you get trained in using it and excellent service.
You can buy other self propelled mowers online from the Hyundai, Cobra, Mountfield and Ego brands.
Or - have you considered a Robot Mower? I have been using these for over 20 years now and they are now viable for very large lawns.
The one I am with above has a V8 engine and was a promotional aid for Friendly Robotics.
If you want my page about real Robot mowers use this link Robot Mowers
More Cordless Mower Options -Cobra 40v and Gtech Falcon Reviewed.
Cobra 40v Cordless Mower
The New Cobra MX4340V cordless mower has a brushless motor for extra power!
It has a huge 40v 5 amp hour Samsung Li-ion battery and a 43cm cut.
Cobra mowers are designed in the UK by a company I have worked with for many years.
This mower is designed to perform and has to be the best value cordless mower in the UK.
Until now only the premium price mowers and powertools had brushless motors.
The mower is very light, but well made and the handle folds completely for easy storage. It does not have a roller for stripes.
I love the LED power level indicators on the handle and the huge 50 litre collecting bag.
It has a metal blade that cuts and collects very well and is light and easy to move thanks to its large rear wheels.
The height adjustment has 5 cutting heights from a very low 25mm- 75mm.
This model sold out quickly in 2020 so don't delay when I put a link up for the 2021 model.
Meanwhile here is a link to its bargain price little brother with a 34cm blade.
GTECH FALCON TESTED AND REVIEWED BY FRED
The Gtech Falcon is made in China but designed by Nick Grey, the British owner of Gtech.
The first model cost around £349 and gave a 43cm cut from it's 36v 4 amp hour battery.
In 2019 the model was changed to a 48v battery, 42cm blade, but only 2 amp hours so it is actually less powerful.
The Gtech Falcon looks stylish and has some clever features like the fold-over handle for better storage.
It also has easy sliding handle height adjustment.
The 2 downsides to this mower, apart from the price.
The battery can only be used in this Gtech mower, unlike most other cordless mowers that are part of a range.
The Gtech falcon does not have a rear roller to make stripes on your lawn.
The Mountfield Princess has a rear roller, mulch plate and is made in Slovakia and £100 cheaper!
Mountfield Freedom 500 Princess 42LI c/w 1 x 4Ah Battery Rear Roller 42cm
cut (New Model 2021) The Murray mower has a wider (44cm) cut but no rear roller
The Murray mower has a wider (44cm) cut but no rear roller
Robot Lawnmowers - The Ultimate Cordless Lawnmower
Lowest priced (reliable) robot mower - powered by 18v Li-ion battery.
Flymo is owned by Swedish company Electrolux who pioneered robot mowing with their Husqvarna robot mower.
Their entry level Flymo robot is ideal for small, well kept simple shaped lawns. If you want more info see my page on Robot Mowers
For help choosing a cordless mower e-mail me
Strictly UK enquiries only please
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Thanks - Fred