20V vs 80V Lawn Mowers in 2026: Key Differences
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You are comparing a 20V vs 80V lawn mower setup for your yard. Both tools use brushless motors and cordless batteries for clean operation. The main difference lies in power and deck size. The 20V model offers a compact 13-inch cut for small spaces. The 80V version provides a wider 21-inch deck for larger areas. This guide breaks down how voltage affects runtime, cutting width, and mowing functions to help you pick the right tool.
Key differences
| Aspect | MZK 13-Inch Brushless Cordless Lawn Mower | Greenworks 80V 21-Inch Cordless Push Mower |
|---|---|---|
| Voltage | 20V | 80V |
| Cutting Width | 13 in | 21 in |
| Runtime | 30 min | Up to 60 min |
| Mowing Function | Bag | 3-in-1: mulch, rear bag, side discharge |
| Cutting Height Positions | 4 positions | 7 positions |
Which one should you choose?
Choose MZK 13-Inch Brushless Cordless Lawn Mower if
- You have a small lawn under a quarter acre
- You need a lightweight mower for easy storage
- You want to swap batteries for extended runtime
Choose Greenworks 80V 21-Inch Cordless Push Mower if
- You have a medium to large lawn
- You prefer mulching or side discharge options
- You want longer continuous runtime per charge
Verdict: The 20V mower suits small yards where compact storage and lightweight handling matter. The 80V model is better for larger lawns needing wider cuts and mulching versatility. Choose based on your lawn size and preferred mowing functions.
20V vs 80V Mower Specs
Voltage and Power
The MZK mower operates on a 20V system, powered by two 20V 4.0Ah batteries working together. This dual-battery setup provides up to 30 minutes of runtime, allowing you to swap units to reduce downtime during larger jobs. In contrast, the Greenworks mower uses a single 80V 4.0Ah battery. This higher voltage platform delivers more torque to the brushless motor, enabling a longer runtime of up to 60 minutes on a single charge. The 80V system is designed for heavier-duty cutting tasks that require sustained power over longer periods.
Cutting Width
Deck size significantly impacts how many passes you need to cover your lawn. The MZK mower features a 13-inch cutting deck, which is compact and maneuverable. This width is ideal for small yards or tight spaces where turning radius matters. The Greenworks mower offers a much wider 21-inch cutting deck. This broader cut covers more ground with fewer passes, making it more efficient for medium to large lawns. If you want to finish mowing faster, the wider deck on the 80V model provides a clear advantage in coverage speed.
Cutting Height Adjustment
Both mowers allow you to adjust the blade height, but the granularity differs. The MZK mower offers four distinct cutting height settings, ranging from 1.3 inches to 2.6 inches. This provides basic flexibility for seasonal grass growth. The Greenworks mower features a single-lever adjustment with seven positions. This allows for finer tuning of the cut height to match specific grass conditions or personal preferences. More positions give you greater control over the final appearance of your lawn, offering a more precise cut.
Mowing Function
How you handle clippings affects your cleanup routine. The MZK mower is designed primarily for bagging, including a 30-liter (8-gallon) removable rear bag. It does not list mulching or side discharge capabilities in its specifications. The Greenworks mower includes a 3-in-1 system, allowing you to mulch clippings back into the lawn, bag them in the rear, or discharge them to the side. This versatility lets you choose the best method for your lawn care goals, whether you prefer to leave clippings to decompose or collect them.
Weight and Portability
Handling the mower matters for storage and transport. The MZK mower weighs only 13 pounds, making it very light and easy to carry up stairs or store in a small shed. Its compact dimensions also aid in maneuverability. The Greenworks mower is significantly heavier at 74.1 pounds. While this weight provides stability during operation, it makes the unit much harder to lift or move frequently. If you need a lightweight tool for easy handling, the 20V model is the practical choice.
Which Cordless Mower Fits Your Yard
Small yard owners with tight storage
The MZK mower features a compact 13-inch cutting deck and weighs just 13 pounds. Its dimensions of 17 by 16 by 9 inches make it easy to store in small sheds. The dual-battery system allows you to swap units quickly, extending your work time without needing a second charger. This setup is ideal for small to medium lawns where maneuverability matters most.
Users needing longer runtime and width
The Greenworks 80V mower offers up to 60 minutes of runtime on a single charge. Its 21-inch cutting deck covers more ground per pass than the 13-inch option. The brushless motor provides higher torque for tougher grass conditions. With a 7-position height adjustment, you can handle varied terrain and seasonal growth changes efficiently, making it suitable for larger yards.
Those wanting versatile grass disposal
The Greenworks model includes a 3-in-1 system that supports mulching, rear bagging, and side discharge. This flexibility lets you choose the best method for your lawn care needs. The 21-inch deck and 60-minute runtime ensure you can complete larger jobs without interruption. The single-lever height adjustment allows for quick changes to match grass conditions, providing a consistent cut across your entire property.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | MZK 13-Inch Brushless Cordless Lawn Mower | small lawns needing compact storage | Check price of MZK 13-Inch Brushless Cordless Lawn Mower on Amazon |
| 2 | Greenworks 80V 21-Inch Cordless Push Mower | medium lawns needing high voltage power | Check price of Greenworks 80V 21-Inch Cordless Push Mower on Amazon |
The products compared
MZK 13-Inch Brushless Cordless Lawn Mower
Best for: small lawns needing compact storage
- Voltage
- 20V (what this guide is about)
- Power Source
- Cordless battery
- Cutting Width
- 13 in
- Drive Type
- push
- Battery Capacity
- 4.0Ah
- Runtime
- Up to 30 minutes
View on Amazon: MZK 13-Inch Brushless Cordless Lawn Mower Affiliate link
This MZK 20V mower uses a brushless motor with 3400 RPM on high for efficient cutting. It features a 13-inch deck and a 30L grass bag. Two 20V 4.0Ah batteries provide 30 minutes of runtime. The 4-position height adjustment ranges from 1.3 to 2.6 inches. This compact unit suits small lawns where maneuverability matters more than wide coverage.
Pros
- Brushless motor reaches 3400 RPM on high setting
- Dual 20V 4.0Ah batteries offer 30 minutes runtime
- 13-inch cutting width reduces passes needed
- 30L rear bag simplifies cleanup
Cons
- 13-inch deck is narrower than the 21-inch option
- 30-minute runtime limits use on larger areas
- Only 4 cutting height positions available
Good fit if
- You have a small lawn under a quarter acre
- You need a lightweight mower for easy storage
- You prefer swapping batteries to extend runtime
Skip if
- You require a wide 21-inch cutting deck
- You need high voltage for thick grass
- You want more than 4 height settings
Verdict: MZK 20V 13-Inch Brushless Mower fits small yards where a narrow deck and lightweight design matter. It trades raw power for compact storage and easy handling.
Greenworks 80V 21-Inch Cordless Push Mower
Best for: medium lawns needing high voltage power
- Voltage
- 80V (what this guide is about)
- Power Source
- 80V battery
- Cutting Width
- 21 in
- Drive Type
- Push
- Battery Capacity
- 4.0Ah
- Runtime
- Up to 60 min
View on Amazon: Greenworks 80V 21-Inch Cordless Push Mower Affiliate link
This Greenworks mower uses an 80V system with a 4.0 Ah battery for up to 60 minutes of runtime. It features a 21-inch cutting deck and a brushless motor for efficient performance. You get a 3-in-1 system for mulching, bagging, or side discharge. The single-lever height adjustment offers seven positions. It is a push model weighing 74.1 pounds, suitable for standard lawns.
Pros
- 80V brushless motor provides high torque and quiet operation.
- Up to 60 minutes of runtime with the included 4.0 Ah battery.
- 21-inch cutting deck covers more ground per pass.
- 3-in-1 functionality allows mulching, rear bagging, or side discharge.
Cons
- Push drive requires physical effort to move the 74.1-pound unit.
- Single-lever height adjustment may be less precise than individual wheel controls.
- Battery capacity is limited to 4.0 Ah, restricting runtime on thick grass.
Good fit if
- You need a powerful 80V system for tougher grass conditions.
- You prefer the versatility of mulching, bagging, or side discharge options.
- You want a quiet brushless motor for neighborhood-friendly operation.
Skip if
- You require self-propelled drive for hilly terrain.
- You need extended runtime beyond 60 minutes without swapping batteries.
- You prefer a lighter mower under 50 pounds for easy storage.
Verdict: Greenworks 80V 21-Inch Push Mower delivers strong cutting power for users who prioritize voltage and deck width over self-propulsion. It fits homeowners with medium-sized lawns who value mulching versatility and quiet operation.
Specifications side by side
| Spec | MZK 13-Inch Brushless Cordless Lawn Mower | Greenworks 80V 21-Inch Cordless Push Mower |
|---|---|---|
| Power Source | Cordless battery | 80V battery |
| Cutting Width | 13 in | 21 in |
| Voltage | 20V | 80V |
| Drive Type | push | Push |
| Battery Capacity | 4.0Ah | 4.0Ah |
| Runtime | Up to 30 minutes | Up to 60 min |
| Cutting Height | 1.3 to 2.6 inches, 4 positions | 7 positions |
| Mowing Function | Bagging | 3-in-1 |
| Motor Type | Brushless | Brushless |
| Application | Lawn | Yard, Lawn |
| Dimensions | 16 × 17 × 9 inches | 32.3 × 18.2 × 20.4 inches |
| Weight | 13 pounds | 74.1 pounds |
| Size | 13IN | 21" Push |
| Color | Red | Black/Green |
| Model | ET2601 | 2501202 |
Frequently asked questions
Is 80V better than 20V for thick grass?
Yes, 80V systems provide more power for challenging conditions. The Greenworks 80V mower is designed for medium lawns where voltage matters. Its higher voltage helps maintain blade speed through dense turf. You get consistent cuts without bogging down. This makes 80V the practical choice for tougher grass types.
Can a 20V mower handle small yards?
Absolutely. The MZK 20V mower is built for small spaces. It features a narrow 13-inch cutting deck that fits easily into tight areas. At just 13 pounds, it is lightweight and easy to maneuver. You will find it ideal for compact yards where storage and handling are priorities.
How wide is the cutting deck on each model?
The cutting widths differ significantly between the two voltages. The MZK 20V model has a 13-inch deck. The Greenworks 80V model offers a wider 21-inch deck. A wider deck covers more ground per pass. You should choose based on your yard size and how much time you want to spend mowing.
Does the 80V mower have a battery included?
The product data lists the Greenworks mower with a 4.0 Ah battery capacity. This indicates the system is designed to work with specific battery units. You need to check if the package includes the battery or if it is sold separately. The voltage system relies on these specific capacity ratings for runtime.
Which mower is lighter and easier to store?
The MZK 20V mower is significantly lighter. It weighs only 13 pounds. Its dimensions are 17 by 16 by 9 inches, making it very compact. The Greenworks 80V mower weighs 74.1 pounds and is much larger. If you have limited storage space, the 20V model is the clear winner.
Do both mowers use brushless motors?
Yes, both models utilize brushless motor technology. The MZK 20V mower is explicitly listed as having a brushless motor. The Greenworks 80V mower is also part of a lineup that typically uses efficient brushless designs for longer life. Brushless motors offer better efficiency and require less maintenance than brushed alternatives.