Introduction
If you use a standard lawn mower to cut thick grass and stubborn weeds, it can quickly overwhelm a standard lawn mower.
Also, it causes clogging, uneven cuts, and reduced battery life. So, it is essential for you to choose the best electric lawn mower for thick grass and weeds.
If you choose this best electric lawn mower for thick grass and weeds, you will have clean, efficient results without noise, fumes, and maintenance.
Nowadays, top electric mowers feature high-torque brush-less motors, durable steel decks, and versatile cutting options.
These features make tackling overgrown lawns much easier.
In this post, I have reviewed the best electric lawn mower for dense grass and weeds.
I have compared their performance, features, pros, and cons to help you find the right mower for your yard.
Ok, let’s dive in..,
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Main Factors To Consider While Choosing For Thick grass And Weeds
Consider the factors,
High voltage,
Brush-less motor,
Wide cutting deck, and
Self-propelled drive
These are the main factors you should consider while choosing for a best electric mower for cutting thick grass and weeds.
For medium to large lawns, models from EGO, and Greenworks, consistently stand out on amazon.com because they maintain a blade speed in dense growth and offer enough run time.
My Quick Comparison Table
Below I have given a simple comparison table for your clear understanding, and to take your purchase decision confidently.
| Feature | EGO POWER+ LM2114SP | EGO POWER+ LM2135SP | Greenworks 80V 21-Inch Self-Propelled | EGO POWER+ LM2114 | Greenworks 80V 21-Inch Brushless Self-Propelled |
|---|---|---|---|---|---|
| Power Source | 56V Battery | 56V Battery | 80V Battery | 56V Battery | 80V Battery |
| Battery Included | 6.0Ah | 7.5Ah | 4.0Ah | 6.0Ah | 4.0Ah |
| Cutting Width | 21 in. | 21 in. | 21 in. | 21 in. | 21 in. |
| Self-Propelled | Yes | Yes | Yes | No | Yes |
| Blade System | Single Blade | Select Cut Multi-Blade | Single Blade | Single Blade | Single Blade |
| Runtime | Up to 50 min | Up to 60 min | Up to 45 min | Up to 55 min | Up to 45 min |
| Cutting Height Range | 1.25–4 in. | 1.25–4 in. | 1.38–4 in. | 1.25–4 in. | 1.38–4 in. |
| Weight | 84 lbs | 90 lbs | ~64 lbs | 70 lbs | ~64 lbs |
| Best For | Best value self-propelled | Thickest grass and premium performance | Powerful 80V option | Best non-self-propelled value | Alternative to EGO |
| Amazon Rating | 4.4/5 | 4.4/5 | 4.3/5 | 4.5/5 | 4.3/5 |
5 Best Electric Lawn Mower for Thick Grass and Weeds
1. EGO POWER+ Electric Lawn Mower, Self-Propelled Cordless, Includes 56V 6.0Ah Battery And 320W Charger – LM2114SP
If you need an excellent mid-range electric mower for a reliable performance in thick grass and moderate weeds, it is a best choice for you.
Some of the important features it has are 21 inch cutting deck, a brushless motor, and a self-propelled rear wheel drive.
It includes 56 volt 6.0 AH battery which provides 50 minutes of run time, which is enough for most of the lawns.
You can mow it up to 1/3 of an acre. This mower supports mulching, bagging, and side discharge.
| Pros | Cons |
|---|---|
| Strong brushless motor delivers excellent cutting power in thick grass and moderate weeds. | Included 320W charger is slower than EGO’s rapid chargers. |
| Self-propelled drive makes mowing dense grass and slopes much easier. | Single-blade system does not mulch as finely as Select Cut models. |
| 21-inch cutting deck covers more lawn in less time. | Runtime drops faster when cutting very tall or wet grass. |
| Compatible with EGO’s 56V battery platform and backed by a 5-year warranty. | More expensive than basic push mowers. |
2. EGO POWER+ Electric Lawn Mower, Self-Propelled Cordless with Select Cut and Touch Drive, Includes 56V 7.5Ah Battery and Rapid Charger – LM2135SP
It is one of the best cordless lawn mower for moving thick grass and weeds.
It contains a select cut multi-blade system which is useful for dual blades to deliver a cleaner cut finer mulching.
It contains a high efficiency brushless motor which produces 7 ft lbs of torque.
It includes a 56 volt 7.5 AH battery which provides 60 minutes of run time.
| Pros | Cons |
|---|---|
| Select Cut multi-blade system delivers a cleaner cut and finer mulching in thick grass and weeds. | More expensive than standard single-blade cordless mowers. |
| Powerful brushless motor with up to 7.0 ft-lbs of torque handles dense grass with ease. | Slightly heavier than basic push mowers. |
| Includes a 56V 7.5Ah battery and rapid charger for up to 60 minutes of runtime. | Runtime can drop noticeably in very tall or wet grass. |
| Touch Drive self-propelled system makes mowing slopes and large yards much easier. | Touch Drive control may take a few uses to get comfortable with. |
3. Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools)
It is one of the powerful cordless mower designed for thick grass and overgrown lawns.
You can expect a clean and consistent cut with the help of high-efficiency brushless motor.
It contains a 21 in steel deck which covers more ground quickly.
It also has a feature of self-propelled drive.
It includes 80 volt 4.0 AH battery which provides enough run time for small to medium yards.
| Pros | Cons |
|---|---|
| Powerful 80V brushless motor delivers excellent torque for cutting thick grass and weeds. | Included 4.0Ah battery provides shorter runtime than larger 5.0Ah or 6.0Ah batteries. |
| Self-propelled drive makes mowing dense grass and slopes much easier. | Heavier than standard push mowers due to the self-propel system and steel deck. |
| 21-inch steel deck covers more lawn quickly and handles rough conditions well. | Premium price compared to lower-voltage cordless mowers. |
| LED headlights and 4-in-1 cutting system add convenience and versatility. | Runtime can drop significantly when using self-propel in very tall or wet grass. |
4. EGO POWER+ Electric Lawn Mower, Cordless, Includes 56V 6.0Ah Battery And 320W Charger – LM2114
It offers a high efficiency brushless motor which delivers up to 6.0 feet LPS of cutting torque.
21 inch deck maintain blade speed in dense turf.
It includes 56 volt 6.0 AH battery provides up to 55 minutes of run time.
It is ideal for small to medium size lawn.
Three in one functionality for mulching, bagging and side discharge plus seven cutting height settings you can expect.
| Pros | Cons |
|---|---|
| Delivers up to 6.0 ft-lbs of torque, providing strong cutting power for thick grass and moderate weeds. | Push mower design requires more effort on slopes and in very dense grass. |
| Includes a 56V 6.0Ah battery with up to 55 minutes of runtime. | Included 320W charger is slower than EGO’s rapid chargers. |
| Lightweight and easier to maneuver than self-propelled models. | Single-blade system does not mulch as finely as Select Cut models. |
| 21-inch deck with 3-in-1 mulching, bagging, and side discharge. | Runtime decreases faster when cutting tall or wet grass. |
5. Greenworks 80V 21″ Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 4.0Ah Battery and 60 Minute Rapid Charger Included
It is one of the high performance cordless mower built for home owner who regularly deal with thick grass and stubborn weeds.
It contains 80 volt brushless motor to cut dense turf.
It contains 21 inch steel deck which is wide enough to cover more ground quickly.
The self-propelled drive reduces effort on hills and rough terrain.
It includes 4.0 AH battery and a rapid charger provides up to 60 minutes of run time.
| Pros | Cons |
|---|---|
| Powerful 80V brushless motor delivers gas-like torque for cutting thick grass and weeds. | Included 4.0Ah battery may require a recharge for larger lawns or heavy mowing. |
| Self-propelled drive reduces effort on slopes and dense turf. | Heavier than standard push mowers due to the steel deck and drive system. |
| Durable 21-inch steel deck covers more lawn quickly and handles rough conditions well. | Premium price compared to lower-voltage cordless mowers. |
| 4-in-1 cutting system with mulching, bagging, side discharge, and turbo leaf pickup adds versatility. | Runtime drops faster when using self-propel in tall or wet grass. |
Best Electric Lawn Mower For Thick Grass Ans Weeds – Buying Guide
What Makes a Lawn Mower Good For Thick Grass
A lawnmower can cut well in thick grass, but it needs more than just a large battery or motor.
The most important factor you should consider is high torque.
This high torque factor helps the blade maintain speed when cutting dense or overgrown grass.
For cutting thick grass, you need a brush-less motor because it is ideal to deliver power more efficiently, and it will adjust to heavier loads automatically.
You can also improve the performance for cutting thick grass and weeds by choosing 21-inch cutting deck, sharp steel blade, and multiple cutting height.
If you choose good cutting deck, it will improve the air flow and reduces clogging.
A self-propelled drive makes it easier to push through heavy turf.
If you are using a cordless model, you should consider larger battery capacities, 6.0Ah or higher.
It will provide longer run time while mowing thick grass and stubborn weeds.
Battery Vs Corded Electric Mowers For Tall Grass
If you are choosing an electric mower for cutting tall grass, there are two options.
One is corded model and another one is cordless model.
If you choose a corded mower, you can expect constant power and unlimited runtime.
These factors makes it easy to lose its cutting strength while cutting dense grass.
These corded mowers are also lighter and more affordable for home owners.
But the drawback is the cord limits mobility and can be inconvenient for moving around obstacles.
If you take a cordless model, it offers greater freedom of movement and is ideal for large yards because you don’t need a power point since it is run by a battery itself.
But you should look for the higher battery capacity which can cut thick grass without draining the batteries fast.
In addition, if you choose a high voltage cordless model with a brush-less motor, it performs very well.
But for maximum consistency in tall grass, corded mowers still have an edge.
Best Battery Voltage For Thick Grass
Here is a simple comparison table of battery voltage and cutting power
| Battery Voltage | Power Level | Performance in Thick Grass | Typical Runtime* | Best For | Example Platforms |
|---|---|---|---|---|---|
| 20V | Low | Poor to Fair | 20–30 minutes | Small yards with light grass | WORX 20V |
| 40V | Moderate | Good for moderately thick grass | 30–45 minutes | Small to medium lawns | Greenworks 40V, Ryobi 40V |
| 56V | High | Excellent cutting power | 45–75 minutes | Dense grass and weeds | EGO Power+ |
| 60V | High | Excellent torque and runtime | 45–70 minutes | Thick grass and larger yards | Toro Flex-Force, DEWALT 60V |
| 80V | Very High | Outstanding for heavy-duty mowing | 45–75+ minutes | Large lawns and very thick grass | Greenworks Pro 80V |
| 82V | Commercial Grade | Exceptional power | 60–90 minutes | Professional and large properties | Snapper XD, CRAFTSMAN 82V |
An Important Note**
Based on my 10 years of experience, I can recommend the best overall voltage is 56 volt to 60 volt for cutting thick grass.
If you want maximum power, you can choose 80 volt or 82 volts.
If you are expecting a budget friendly option, you can go for 40 volt if it is a regularly maintained lawns.
One of the important note here I should tell is, this voltage factor alone does not determine the performance.
An electric mower with sharp blades, 6.0 AH larger battery and a brush-less motor can out perform a higher voltage motor with a weaker motor.
So, you should keep in mind that voltage alone does not determine the performance.
Can Electric Mowers Cut Weeds And Tall Grass
My short answer is yes.
Electric lawn mowers can cut weeds and tall grass effectively, but their performance mostly depends on the mower’s power and the thickness of the grass.
If you choose a high-quality corded model and a modern cordless mower with brush-less motors, it will generate enough torque to slice through the dense grass without bogging down.
If you choose a model which has a battery with 56 volt, 60 volt, or 80 volt, combined with sharp blade and a wide cutting deck, you can expect a clear mowing session.
For your best result, raise the cutting height and mow in stages rather than trying to cut everything in a single session.
But, if the lawn is extremely weedy or brush, still it requires a string trimmer or brush cutter before starting your mowing session.
Common Problems When Cutting Thick Grass
One of the main problem I can see while cutting thick grass is the clogging, where wet or dense clippings build up under the deck and block air flow.
When the motor struggles to maintain blade speed, mower may also bog down.
If you are using cordless model, the batteries can drain faster and cause overheating during extended use while cutting a thick dense grass.
You can see uneven cutting in your lawn if the blade is dull or the grass is too tall to cut in one pass.
You can also see scalping when the cutting is too low.
If you want to avoid these problems, you should mow in stages, you should keep the blade sharp, and you should avoid mowing the wet grass.
My Personal Tips For Mowing Thick Grass
I can confidently say that mowing thick grass is easier when you use the right technique and right electric mower.
First, you should start by raising the cutting height so that the mower removes only the top portion of the grass.
If you found the lawn is severely overgrown, you should mow in two or three passes, lowering the deck gradually in every pass.
You should ensure the sharpness of the blade before starting your session. Then you can expect a clean cut and reduced strain on the motor.
Check whether the grass is wet. If it is wet, avoid the mowing session because the wet grass clumps and can clog the deck.
If you are using cordless model, begin with a fully charged battery.
Finally, you need patience to mow thick grass. You should mow at a steady, slower pace and empty the grass bag frequently to maintain airflow and cutting performance.
My Final Verdict
Based on the analysis of these electric lawn mowers, I can confidently say that the best overall for thick grass is EcoPower + LM2135SP.
It is the strongest choice for thick grass and weeds because it has a select cut dual-blade system and a larger 7.5 AH battery.
These options provide better cutting performance and longer runtime.
Below is my best picks for different needs for your reference.
My Best Picks for Different Needs
- Best Overall for Thick Grass: EGO POWER+ LM2135SP
- Best Value Self-Propelled: EGO POWER+ LM2114SP
- Best Push Mower: EGO POWER+ LM2114
- Most Powerful Alternative: Greenworks 80V 21-Inch Self-Propelled
- Best for Large Yards: EGO POWER+ LM2135SP
Frequently Asked Questions
1. Can an electric lawn mower cut thick grass and weeds?
Yes, modern electric lawn mowers can handle thick grass and light to moderate weeds very effectively. Models with brushless motors, high-torque blade systems, and larger batteries (56V to 80V) are especially capable. For the best results, mow when the grass is dry, use a sharp blade, and raise the cutting height for the first pass.
2. What battery voltage is best for cutting thick grass?
For thick grass and dense lawns, cordless mowers with 56V, 60V, or 80V battery systems offer the best balance of power and runtime. Voltage alone does not determine performance, but higher-voltage platforms generally deliver stronger torque and maintain blade speed better under heavy loads.
3. Is a self-propelled mower better for overgrown lawns?
Yes, self-propelled mowers are easier to use when cutting tall or heavy grass because they reduce the effort needed to push the mower through dense turf. They are especially helpful on large yards, uneven terrain, and sloped areas where thick grass can create more resistance.
4. How often should I sharpen the mower blade?
A mower blade should typically be sharpened every 20 to 25 hours of use, or at least once or twice per mowing season. Sharp blades cut cleanly, improve efficiency, and reduce strain on the motor and battery when mowing thick grass.
5. What is the best electric lawn mower for thick grass and weeds?
Top-performing models for heavy grass include the EGO Power+ LM2135SP, Greenworks 60V 25-inch Dual Blade Self-Propelled Lawn Mower. These mowers offer strong torque, wide cutting decks, and excellent real-world performance in dense and overgrown lawns