80V vs 24V Lawn Mowers in 2026: Key Differences
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are comparing an 80V vs 24V lawn mower setup to decide which power system fits your yard. Both tools use cordless brushless motors for quiet, emission-free operation. The main difference lies in voltage and intended use. The Greenworks model is a dedicated push mower with an 80V battery, while the Sun Joe unit is a dethatcher using two 24V batteries. Understanding these specs helps you choose the right tool for mowing or lawn care.
Key differences
| Aspect | Greenworks 80V 21-Inch Cordless Push Mower | Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier |
|---|---|---|
| Voltage | 80V | 24V (uses two 24V batteries for 48V total) |
| Cutting Width | 21 in | 15 in |
| Drive Type | Push | Not listed |
| Mowing Function | 3-in-1: mulch, rear bag, side discharge | Scarifying and dethatching |
| Battery Capacity | 4.0 Ah | 4.0 Ah (2 batteries included) |
| Weight | 74.1 pounds | 36.4 pounds |
Which one should you choose?
Choose Greenworks 80V 21-Inch Cordless Push Mower if
- You need a dedicated mower for cutting grass on a standard lawn.
- You prefer a wider 21-inch cutting deck for faster mowing coverage.
- You want a single 80V battery system for runtime.
Choose Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier if
- You need a tool specifically for dethatching or scarifying your lawn.
- You prefer a lighter unit that is easier to maneuver and store.
- You are working with a smaller yard or tight spaces.
Verdict: Choose the Greenworks 80V model if you need a primary mower for cutting grass. Select the Sun Joe 24V dethatcher if your goal is lawn rejuvenation rather than mowing. These are distinct tools for different tasks, so pick based on whether you need to cut grass or remove thatch.
80V vs 24V Mower Comparison
Voltage and Power
The Greenworks mower operates at 80V, providing higher voltage for robust cutting performance. This setup delivers more torque to handle thick or wet grass with ease. In contrast, the Sun Joe tool uses a dual 24V battery configuration, effectively combining to 48V. While this offers decent power for lighter tasks, the 80V system is designed for heavier-duty mowing. Higher voltage generally translates to better sustained power under load, making the 80V model more capable for standard lawn maintenance.
Cutting Width
Cutting width significantly impacts how quickly you can finish your yard. The Greenworks mower features a 21-inch cutting deck, allowing you to cover more ground with each pass. This wider deck is ideal for larger lawns where efficiency matters. The Sun Joe tool has a narrower 15-inch cutting width. This smaller footprint is better suited for tight spaces or smaller yards but requires more passes to cover the same area. If your primary goal is covering large areas quickly, the wider deck offers a clear advantage.
Drive Type
How the machine moves affects your physical effort. The Greenworks mower is a push model, meaning you must provide the forward motion. This requires more physical exertion, especially on slopes or in tall grass. The Sun Joe tool is also a push-style device, lacking a self-propelled drive system. Both require you to push the machine manually. Neither offers a drive system to assist with movement. This means you will need to exert similar effort to maneuver both units across your lawn.
Weight and Maneuverability
Weight influences how easy a tool is to lift and turn. The Greenworks mower weighs 74.1 pounds, making it a substantial piece of equipment. Its weight provides stability but can make it harder to lift or transport. The Sun Joe tool is significantly lighter at 36.4 pounds. This reduced weight makes it much easier to carry, store, or maneuver around obstacles. For users who prioritize easy handling or have limited storage space, the lighter build of the Sun Joe model is a practical benefit.
Runtime and Battery
Run time determines how much area you can mow on a single charge. The Greenworks mower includes a 4.0 Ah battery and offers up to 60 minutes of runtime. This is sufficient for medium-sized lawns. The Sun Joe tool uses two 24V 4.0 Ah batteries. While it provides extended runtime for its specific tasks, the Greenworks battery capacity is optimized for continuous mowing. The 60-minute runtime on the 80V system is a key spec for covering typical residential yards without interruption.
Which 80V or 24V tool fits you
Homeowners with standard up to half acre lawns
This 80V push mower features a 21-inch cutting deck and a brushless motor that delivers high torque. You get up to 60 minutes of runtime with the 4.0Ah battery. The 7-position height adjustment handles various grass conditions. It offers a 3-in-1 system for mulching, bagging, or side discharge, making it efficient for general lawn maintenance.
Users needing precise thatch removal and dethatching
This Sun Joe tool uses dual 24V batteries for 48V power to drive a brushless 600W motor. It includes a 15-inch cutting width with a 24-tine dethatching cylinder and a 7-blade scarifying cylinder. The 5-position depth control allows precise adjustment from -0.375 to 0.4 inches. A 10.6-gallon collection bag captures debris for easy cleanup.
Those prioritizing lightweight maneuverability and storage
Weighing only 36.4 pounds, this unit is significantly lighter than the 74.1-pound mower. Its compact dimensions of 26.5 inches in length and 18.8 inches in width make it easier to store. The 15-inch width is manageable for smaller spaces. The lightweight design reduces fatigue during operation and simplifies transport around the yard or into a garage.
Buyers wanting versatile mulching and bagging options
The Greenworks mower provides a true 3-in-1 function, allowing you to mulch, rear bag, or side discharge. The 21-inch deck covers more ground per pass than the 15-inch tool. With a 4.0Ah battery, you can tackle larger areas without interruption. The single-lever height adjustment ensures consistent cuts across different grass types and conditions.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Greenworks 80V 21-Inch Cordless Push Mower | Flat lawns under half an acre | Check price of Greenworks 80V 21-Inch Cordless Push Mower on Amazon |
| 2 | Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier | Removing thatch and moss from lawns | Check price of Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier on Amazon |
The products compared
Greenworks 80V 21-Inch Cordless Push Mower
Best for: Flat lawns under half an acre
- 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 brushless motor and a 4.0 Ah battery to deliver up to 60 minutes of runtime. The 21-inch cutting deck handles standard lawns efficiently. It features a 3-in-1 system for mulching, bagging, or side discharge. The single-lever height adjustment offers seven positions. It is a push model, meaning you must provide the propulsion. This setup suits users who prefer manual control and quiet operation.
Pros
- 80V brushless motor for quiet, efficient power
- Up to 60 minutes of runtime on a 4.0 Ah battery
- 21-inch cutting deck with 3-in-1 mulch, bag, and discharge options
- 7-position height adjustment via single lever
Cons
- Push drive type requires physical effort to move
- Heavier build at 74.1 pounds
- No self-propelled mechanism for hills
Good fit if
- You have a flat lawn under half an acre
- You want a quiet brushless motor
- You prefer manual push control
Skip if
- You need self-propelled power for slopes
- You have a large lawn exceeding 60 minutes of runtime
- You want a robotic or remote-controlled mower
Verdict: Greenworks 80V 21in Push Mower is a solid choice for flat yards where you want quiet operation and manual control. It fits users who do not need self-propulsion and value a brushless motor.
Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier
Best for: Removing thatch and moss from lawns
- Voltage
- 24V (what this guide is about)
- Power Source
- Cordless
- Cutting Width
- 15.0-Inch
- Battery Capacity
- 4.0-Ah
- Motor Type
- brushless
- Dimensions
- 26.5 × 18.8 × 16 inches
View on Amazon: Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier Affiliate link
This Sun Joe tool uses two 24V batteries to deliver 48V power for dethatching and scarifying. It features a 15-inch cutting width and a brushless 600W motor. The unit offers five depth positions ranging from -0.375 to 0.4 inches. A 10.6-gallon collection bag captures debris. It is designed for homeowners who need to remove thatch and moss to promote thicker grass growth.
Pros
- Dual 24V batteries provide 48V runtime
- Brushless 600W motor for extended operation
- Five-position depth control from -0.375 to 0.4 inches
- 10.6-gallon collection bag for debris
Cons
- 15-inch cutting width is narrower than standard mowers
- Not a lawn mower; requires separate tool for mowing
- Heavier at 36.4 pounds due to dual batteries
Good fit if
- You need to remove thick moss and thatch
- You want precise depth control for lawn care
- You already own compatible 24V batteries
Skip if
- You only need to cut grass
- You prefer a wider 21-inch cutting path
- You want a single tool for all lawn tasks
Verdict: Sun Joe 15-Inch Cordless Scarifier is a specialized tool for homeowners who need to dethatch and scarify their lawns. It fits users who prioritize thatch removal over simple grass cutting and already have compatible batteries.
Specifications side by side
| Spec | Greenworks 80V 21-Inch Cordless Push Mower | Sun Joe 48V 15-Inch Cordless Dethatcher and Scarifier |
|---|---|---|
| Power Source | 80V battery | Cordless |
| Cutting Width | 21 in | 15.0-Inch |
| Voltage | 80V | 48V (Dual 24-V) |
| Drive Type | Push | not stated |
| Battery Capacity | 4.0Ah | 4.0-Ah |
| Runtime | Up to 60 min | not stated |
| Cutting Height | 7 positions | not stated |
| Mowing Function | 3-in-1 | not stated |
| Motor Type | Brushless | brushless |
| Application | Yard, Lawn | not stated |
| Dimensions | 32.3 × 18.2 × 20.4 inches | 26.5 × 18.8 × 16 inches |
| Weight | 74.1 pounds | 36.4 pounds |
| Size | 21" Push | Cordless; 15.0-Inch |
| Color | Black/Green | GREEN |
| Model | 2501202 | 24V-X2-DTS15 |
Frequently asked questions
Is 80V better than 24V for thick grass?
Yes. The Greenworks 80V model delivers higher voltage for robust cutting performance. This setup provides more torque to handle thick or wet grass with ease. The 24V Sun Joe unit is a specialized dethatcher, not a primary mower for heavy grass loads.
Can I use the 24V tool as a regular mower?
No. The Sun Joe 24V product is a cordless dethatcher and scarifier. It removes thatch and moss from lawns. It does not cut grass like a standard mower. You need a dedicated mower, such as the 80V Greenworks, for regular cutting.
How wide is the cutting path on the 80V mower?
The Greenworks 80V mower has a 21-inch cutting deck. The overall width of the unit is 18.2 inches. This width allows you to cover more ground per pass compared to narrower models. It is suitable for flat lawns under half an acre.
What is the weight difference between these two tools?
The Greenworks 80V push mower weighs 74.1 pounds. The Sun Joe 24V dethatcher weighs 36.4 pounds. The mower is significantly heavier due to its larger motor and deck. The dethatcher is lighter, making it easier to maneuver for spot maintenance tasks.
Does the 80V mower require self-propulsion?
No. The Greenworks 80V model is a push mower. It does not have a self-propulsion drive type. You must push it manually across your lawn. This design fits users who prefer manual control and do not need assisted movement on flat terrain.
What battery capacity does the 80V mower use?
The Greenworks 80V mower uses a 4.0 Ah battery. This capacity supports up to 60 minutes of runtime. The 24V Sun Joe tool uses a different battery system. Check compatibility if you plan to share batteries between your existing tools and this new device.