| Cordless Grass Trimmers
Tested and reviewed by Fred-in-the-shed
Updated 7th May 2026
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Worx 20v Grass Trimmer
Bosch 36v Grass Trimmer
Black & Decker 18v & 36v Grass Trimmers
Gtech ST50 18v Grass Trimmer
Bosch 18v Grass Trimmers
Small Shrub and Grass Trimmers
Stihl Shrub and Grass Trimmer
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I test the Worx 20V Cordless Grass Trimmer
& compare to the Black & Decker 18v & 36V Strimmers
Cordless grass trimmers are far more convenient to use than mains powered trimmers.
Until recently cordless grass-trimmers suffered from poor battery power and life that
was
aggravated by seasonal use and long periods of storage.
Due to the high price of a
replacement battery, many of these tools ended up at the tip as soon as the batteries failed.
New lithium-ion technology makes these handy power tools far more viable since the batteries
are more powerful and can survive long periods of not being used.
All new models use Li-ion batteries
and I advise buying from a range where the battery can be used in other
tools too.
BEST CORDLESS GRASS TRIMMER - Based on
5 year test
Worx 20v TRIMMER
Worx 163E Trimmer with one Battery and Charger
Worx WG163E grass trimmer with 2 batteries
4 Extra spools of nylon cord
Powerful, well balanced, trims horizontal AND vertical edges.
The same battery powers
this mower and 30 other Worx and Wesco tools!
This 20v Worx model
is my favorite grass trimmer because it outperforms any other I have tried.
It has a 23cm cutting diameter so is suitable for
GRASS trimming on small to medium lawns but not thick weed and scrub clearance.
If you want to trim large areas or clear weeds then look at one of the 36v models further down this page.
The "USP" that makes it the best is the unique way that the head rotates for trimming vertical lawn edges.
This is the only strimmer of the dozens I tried that
trims in-line with your eye which enables more accuracy when
edging.
The replacement spools are
much cheaper than other makes and discount multi-packs are available from other makes.
The trimmer is available as a bare tool, or with 1 or 2, 20v, 2 amp hour batteries .
The same, 2 amp hour battery fits the
Worx cordless chainsaw, mower, hedge trimmer and dozens of other Worx
powertools.
If you have a really large lawn you can buy
it with 2 batteries or get a 4 amp hour battery that runs for twice as long.
WORX
20V 4.0Ah Lithium Battery
WORX 40V Cordless 34cm Lawn Mower WG779E with 2 x 2.5Ah Batteries & Dual
Port Charger
If you are buying this
superb trimmer please use my links to help keep Fredshed online for
another 26 years!
If the Worx model is not available
or you want a cheaper but similar trimmer use the link below.
Buy Lawmaster
Trimmer Direct from Manufacturer with a 10% Fredshed discount
Use code Fred10 at checkout
4PK Spools For Worx String Trimmer (4Spool 1 Cap)
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BEST HEAVY DUTY CORDLESS GRASS TRIMMER - Based on 3 year test
Bosch 36V Cordless Grass Trimmer Review
Bosch ART 30-36 -
Battery Strimmer for Larger Lawns or weed clearance
Bosch AdvancedGrassCut 36
This is the biggest trimmer made by Bosch and
uses a dual line made from a new ultra tough material.
It is available with or without a 36v 2 amp hour battery and charger.
This is great if you already have the mower or any of
the 36v Li-ion batteries that I have tried and tested over the last 15 years in the Bosch Rotak mowers.
The build quality is very good
and it cuts like a demon. The line is tough enough for the thickest
weeds.
The newer AdvancedCut model has a
brushless motor, wider 33cm cut and a harness.
Newer model Bosch 36v Heavy Duty Grass trimmer
A Bosch replacement spool with 6m of line costs around £8 or you can buy
cheaper line to fit your empty spool if you like fiddling around.
A heavy tool like this
really improves with a harness, only the newer model comes with a strap.
Oregon Strimmer Shoulder Harness
If you want a cordless strimmer with the option of a
metal blade then see link below
Greenworks GD40BC Cordless Grass Trimmer and Scythe 2-in-1
Bosch ART 30- 36Li Cordless Grass Trimmer & Rotak 37Li Mower
BOTH CAN USE THE SAME BATTERY
Different size replacement batteries are available
2.0 amp hour is supplied but 4.0 amp hour replacement 36v
batteries can be used if you can handle the extra weight.
The more heavier 4.0 Ah battery is designed for the mowers where you need more power.
Bosch 36 V 2.0 Ah Battery
Bosch 36 V
4.0 Ah Battery
If you are cutting large areas of grass or thick weeds
then the 36v Bosch trimmer has plenty of power.
If you are buying a trimmer
please use my links to help keep Fredshed online for another 26 years!
If you want a Makita 18v cordless trimmer use the link below.
Makita DUR190LRT 18 V Li-ion Brushless Brush Cutter
Oregon Double Shoulder Harness 
Bosch Strimmer Spool 6 m x 1.6 mm
for ART 30-36 LI
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Small Lightweight Cordless Grass Trimmers
Black & Decker STC 1820-GB 18v Lithium-ion Cordless Grass Trimmer
BLACK+DECKER
18V Strimmer
This small strimmer uses the standard nylon line in a spool , and
a slide-in 18v Lithium-Ion (Li-Ion) battery that holds 2 amp hours of
charge. It can be recharged in 2 hours and gives a run time of
around 20-30 minutes. I love this strimmer as it is light enough for
me to use from my wheelchair and the spool has never got stuck. It
is quiet and easy to adjust for people of different heights.
A nice feature is the wheel that enables easy trimming of
lawn edges. Just turn the tool on its side and run it along the edge. The handle has
telescopic height adjustment with a good range and the line gives a 28cm cut.
On the handle there is also an extra button to switch between eco and
turbo mode . The idea is to gain extra battery time by using less
power for lighter work. Does it work? Yes, use the low setting
just for grass edging, and the high setting for thick grass or weeds.
A unique accessory can transform the tool into a mini mower by
attaching a small deck with wheels on. This was an idea I had years
ago and was really chuffed to see it appear, and even more chuffed to
try it and find that it is ideal for a quick tidy when my small lawn
occasionally grows in patches.
Trimmer shown with optional mowing deck attached
I would like to make it absolutely clear that the deck will not replace a
lawn mower on anything but the smallest lawn and even then you would
have to keep the grass fairly short as the decking attachment is
useless on long grass. The reason for this is that the deck prevents
the grass from clearing so for long grass use the strimmer without the deck.
I have used this product over
6 seasons and am pretty impressed,
it also uses the easily available and cheap A6481 spool.
BLACK+DECKER STC1820PC-GB 18V Li-Ion 28cm AFS Strimmer
BLACK+DECKER CM100-XJ 3-in-1 Lawn Mower Deck Attachment
BLACK+DECKER A6481 Spool & Line For Reflex Strimmer
Black & Decker BL2018-XJ 18V 2.0Ah Battery
BLACK+DECKER 18V Cordless 45cm Anti-Jam Hedge Trimmer - Bare Unit (Battery not Included)
Heavier Duty B&D 36v model
This model has a 2 amp hour 36v Li-ion battery so is heavier but more
powerful than the 18v model.
The 36v model has a 33cm wide cutting diameter which is wider than all the 18v/20v
models .
If you have a really large
lawn or long rough areas to strim this bigger model will have the power and
size you need.
BLACK+DECKER
36 V Li Ion High Performance Strimmer/33 cm Cut
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Gtech GT50 18v Cordless Grass Trimmer
I have had most of the Gtech grass trimmers and now this GT50 comes with a 2.5 amp hour 18v battery.
Like the previous models it has
easy to clip-on plastic
blades rather than a spool of nylon line.
The GT50 is well made, easy to adjust and can converted into a mini mower
with the SLM50 attachment
Plastic blades are easier to fit than nylon line or a spool but can break more easily.
The plastic blades
have improved a lot, but be careful near
concrete paths or walls.
One interesting and unique feature of the GT50 is that the handle and battery can be used to power the SLM50 mini mower.
Spare plastic blades are cheap and easily available,
buy the genuine ones for durability.
50 Spare blades for Gtech Trimmer
The SLM50 mower can be bought with a handle and
battery or just on its own if you have the GT50 grass trimmer.
The handle quickly snaps on and the mini mower
has a proper 10 inch metal blade and 4, height adjustable
wheels.
The cut quality is very good, especially
if you cut regularly so there is not so many cuttings. Having
used 2 other mini mowers I can confirm that this one is the
best.
If you have a small lawn then you will probably also appreciate the space saving aspect of the SLM50.
Use the link below to buy direct from the manufacturer.
Grass Trimmer
with 1x battery 2.5 Ah, 18 Volt 23cm
Gtech SLM50
20cm cut mini mower- body only
Spare blades for Gtech Grass Trimmers
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Bosch 18v Cordless Grass Trimmers
I have owned many Bosch grass trimmers but do
not have any of the current ones. They
are relatively expensive and now all use expensive spools that
are confusing to buy.
The main advantage is the use of the
superb 18v "Power for all" battery which many people now
own.
The new grass trimmer models are called the EasyGrass cut UniversalGrassCut.
Bosch UniversalGrassCut 18-26 1x battery 2.5 Ah, 18 Volt 26cm
Plastic Blades for Discontinued Bosch Cordless Trimmers
Bosch Strengthened Durablade for
23cm Grass Trimmer
Bosch Strengthened Durablade for
26cm Grass Trimmers
So to clarify my opinion is that the Worx 163E
is the best 18v nylon line trimmer.
The Gtech GT50 is the best 18v grass trimmer if you prefer the
convenience of plastic blades.
When buying replacement plastic blades get them from the manufacturer, knock off ones are very poor quality.
An 18v grass trimmer is adequate for most
lawns but 36v is better for large areas and longer grass.
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Small Battery Powered Electric Grass Shears
Metal Bladed - "Clipper Type"
Alternative to Nylon Cord Grass Trimmers
Electric trimmers that cut
with a Nylon cord often fail to self feed and can be hard to
replace or find replacement cord.
Plastic blades are easier to replace but
have a nasty habit of breaking when they hit something hard like a path or edging material.
For small jobs I prefer an electric version of the
sheep shear that has long lasting metal blades and a
lithium ion battery that can run for up to 60 minutes.
This type of tool has been around a long time and
is well tested. The Bosch Isio is the most versatile as it
can be fitted to a telescopic handle and have wheels attached.
You can also turn your Isio, into a small hedge shear.
With a few simple clicks you can remove the grass
shear blades and replace them with a small hedge trimming blade!
The Orange coloured
trimmer is a Chinese product and has a 7.2v battery whilst Bosch only has 3.6v. This makes quite
a difference in the time the trimmer will run and type of material it
will trim.
These Chinese trimmers come and go with many
different brand names but probably all come from the same
factory.
They cost about half the price of the Bosch
Isio and include the long handle which is an extra with Bosch.
For the money it looks excellent
and my tests on similar Chinese products were very good.
Chinese made 7.2v grass and shrub trimmer
If you want an even heavier duty version the Worx Zen model uses 20v batteries and
can be bought naked so you can chose the size of battery to buy separately.
WORX WG801E.9 ZEN 18V 20V MAX Cordless Shrub Shear - BODY ONLY
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IMPORTANT NEWS
NEW IMPROVED BOSCH ISIO - MUCH EASIER TO SWAP BETWEEN BLADES
Grass AND shrub trimming from one tool
The Bosch ISIO can be converted from a grass shear
to a small shrub trimmer in seconds and is surprisingly efficient. Running time is very good thanks to the Li-ion batteries
and I get 20 minutes use which includes some woody shrub material.
The battery will last between re-charges when cutting softer material.
The latest version of this tool has anti-jam electronics that
stops and reverses the blades the instant resistance is detected.
Bosch Isio Cordless Shrub/ Grass Shear
Telescopic Handle for Isio
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Stihl HSA 26 - Tested and Reviewed by Fred
This superb tool is like the Bosch Isio on steroids!
It has a 10.8v, removable Li-ion battery, a wider blade and superb build quality.
It comes with a handy case to hold the charger and shrub trimmer
blade.
STIHL HSA 26 Cordless Shrub Shears with AS2 Battery & AL1 Charger
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Choosing the Best Replacement Trimmer Line
Improve your trimmer's cutting performance with an advanced design
replacement line.
If you want to strim thick tough material like weeds then buy a star
shaped or twisted line.
If you just trim the grass at the edges of your lawn and want a nice
finish then get the thinnest, normal round profile line as this will
cut cleaner and neater.
Oregon Nylium Starline Trimmer Line for Over Grown Grass and Weeds with Five Cutting Edges
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If you found this page useful and decide to buy this
grass trimmer at a later date please come back and use my links as this helps keep my site going, thanks, Fred
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If you found my advice helpful and would like to support my work,
please return to this page and use my links when purchasing your
tools.
Also any other products bought from Amazon at the same time will
produce a small commission that helps cover my hosting costs.
Or if you prefer, you can make a
small donation using the PayPal button below.
Thanks - Fred
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