40V or 80V Lawn Mowers? Compared by Specs
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Choosing between a 40V vs 80V lawn mower depends on your yard size and cutting needs. Both Greenworks models use a 4.0 Ah battery and offer push drive types. They share the same power source category and similar battery capacity. The main difference lies in the system voltage and cutting width. One offers a wider deck and higher voltage, while the other provides a lighter, more compact design. Your choice hinges on how much grass you need to cut and how much weight you want to push.
Key differences
| Aspect | Greenworks 40V 16-Inch Push Lawn Mower | Greenworks 80V 21-Inch Cordless Push Mower |
|---|---|---|
| Voltage | 40V | 80V |
| Cutting Width | 16 in | 21 in |
| Motor Type | not listed | Brushless |
| Mowing Function | 2-in-1 (mulch, rear bag) | 3-in-1 (mulch, rear bag, side discharge) |
| Cutting Height Positions | 5 | 7 |
| Weight | 37.5 pounds | 74.1 pounds |
Which one should you choose?
Choose Greenworks 40V 16-Inch Push Lawn Mower if
- You have a smaller yard under 1/3 acre and prefer a lighter mower that is easier to maneuver.
- You already own other 40V Greenworks tools and want to share batteries across your toolkit.
- You prioritize a compact storage footprint and do not need side discharge capability.
Choose Greenworks 80V 21-Inch Cordless Push Mower if
- You have a larger yard and need the faster coverage provided by the wider 21-inch cutting deck.
- You want the efficiency and longevity of a brushless motor with higher torque.
- You need the flexibility of side discharge for clearing grass clippings in tight spaces.
Verdict: The 40V model suits small yards where maneuverability and shared battery compatibility matter most. The 80V model is better for larger areas requiring a wider cut and more durable motor technology. Select the voltage that matches your mowing area and existing tool ecosystem.
40V vs 80V Mower Specs
Voltage and Power
Product A is a 40V Greenworks 16-Inch Push Lawn Mower, while Product B is an 80V Greenworks 21-Inch Cordless Push Mower. Higher voltage generally means more power under load. The 80V system in Product B provides higher potential torque and speed. This can help maintain blade speed in thick or wet grass. Product A’s 40V system is sufficient for smaller, lighter tasks. You get more raw electrical pressure with the 80V model. This difference affects how the mower handles resistance. If you have dense turf, the higher voltage offers a clear advantage in cutting consistency.
Cutting Width
Product A features a 16-inch cutting deck. Product B offers a wider 21-inch cutting deck. The extra 5 inches in Product B means you cover more ground per pass. This reduces the number of passes needed to mow a yard. Wider decks are better for larger, open lawns. The 16-inch width of Product A is easier to maneuver in tight spaces. It fits better between garden beds or around obstacles. However, for general yard maintenance, the 21-inch width is more efficient. You finish the job faster with the wider cut.
Mowing Functions
Product A provides a 2-in-1 system for mulching and rear bagging. Product B offers a 3-in-1 system with mulch, rear bagging, and side discharge. The side discharge option in Product B allows you to clear grass clippings to the side. This is useful for larger yards where bagging is too frequent. It helps manage heavy clippings that might clog a bag. Product A lacks this side discharge capability. If you prefer to leave clippings on the lawn or bag them, both work. But the extra function in Product B adds versatility for different lawn conditions.
Motor Type
Product B specifies a brushless motor. Product A does not list its motor type in the provided data. Brushless motors are generally more efficient and durable than brushed ones. They provide more torque and run quieter. They also have a longer lifespan because there are no carbon brushes to wear out. This efficiency can help extend battery run-time. If Product A uses a brushed motor, it may generate more heat and require more maintenance. The brushless design in Product B is a technical advantage for long-term use and performance.
Weight and Maneuverability
Product A weighs 37.5 pounds. Product B weighs 74.1 pounds. Product A is significantly lighter, making it easier to push and lift. This is helpful if you need to carry the mower up stairs or store it in a small space. Product B is nearly double the weight. This adds stability but makes it harder to maneuver, especially on inclines. Both are push models, so you provide all the movement. The lighter weight of Product A reduces physical effort. For users with limited strength or smaller yards, the lighter build is a practical benefit.
Which Greenworks Model Fits Your Yard
Small yard owners needing easy storage
Product A weighs 37.5 pounds and measures 50.8 inches long. Its 16-inch cutting width fits narrow spaces. The 5-position height adjustment handles basic lawn care. You get a 3-year warranty and access to over 75 compatible 40V tools. This lightweight design simplifies transport and storage for smaller properties.
Larger lawns requiring faster coverage
Product B features a 21-inch cutting deck that covers more ground per pass. The brushless motor offers higher torque and efficiency. You gain a 3-in-1 system with side discharge for varied debris management. The 7-position height adjustment provides precise control. This wider cut reduces total mowing time for larger areas.
Users prioritizing runtime and durability
Product B delivers up to 60 minutes of runtime with its 4.0 Ah battery. The brushless motor ensures longer life and quieter operation. Higher voltage supports sustained power under load. The durable 21-inch deck handles thick grass efficiently. You get a rapid charger and comprehensive features for demanding mowing sessions.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Greenworks 40V 16-Inch Push Lawn Mower | small lawns under one-third acre | Check price of Greenworks 40V 16-Inch Push 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
Greenworks 40V 16-Inch Push Lawn Mower
Best for: small lawns under one-third acre
- Voltage
- 40V (what this guide is about)
- Power Source
- Cordless
- Cutting Width
- 16 in
- Drive Type
- Push
- Battery Capacity
- 4.0 Ah
- Cutting Height
- 5 position
View on Amazon: Greenworks 40V 16-Inch Push Lawn Mower Affiliate link
This 40V push mower features a 16-inch cutting width and a 4.0 Ah battery. It weighs 37.5 pounds and offers five cutting height positions. You get mulching and rear bagging options. The unit is 35% lighter than steel deck mowers. It works with over 75 other Greenworks 40V tools. This model suits small lawns up to one-third acre.
Pros
- 16-inch cutting width for narrow paths
- 4.0 Ah battery supports 75+ compatible tools
- Weighs only 37.5 pounds for easy handling
- Includes mulching and rear bagging capabilities
Cons
- 16-inch deck is narrower than the 21-inch option on this list
- Push drive requires manual effort unlike self-propelled models
- 3-year warranty is shorter than the 5-year warranty on the 80V competitor
Good fit if
- You have a small lawn under one-third acre
- You already own other Greenworks 40V tools
- You prefer a lightweight mower for easy storage
Skip if
- You need a wider 21-inch cutting deck
- You want a self-propelled drive system
- You require an 80V platform for higher power
Verdict: Greenworks 40V 16in Push Mower is a lightweight option for small yards that fits into an existing Greenworks 40V ecosystem. It is best for users who prioritize tool compatibility and low weight over cutting width or self-propulsion.
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 80V push mower features a 21-inch cutting deck and a brushless motor for efficient operation. It offers up to 60 minutes of runtime on a 4.0 Ah battery. The single-lever height adjustment provides seven positions for varied grass conditions. It includes a mulch, bag, and side discharge system. This model suits users seeking a powerful cordless option for medium-sized lawns.
Pros
- 80V brushless motor provides high torque and quiet operation
- Up to 60 minutes runtime with 4.0 Ah battery
- 21-inch cutting deck covers more ground per pass
- 7-position single-lever height adjustment for all grass types
- 3-in-1 mulch, rear bag, and side discharge capabilities
Cons
- Heavier at 74.1 pounds compared to lighter 40V models
- Push drive requires more physical effort than self-propelled options
- No remote start or smart app connectivity listed
Good fit if
- You want higher voltage power for thicker grass
- You prefer a push mower for smaller yards
- You need versatile mulching and bagging options
Skip if
- You need self-propelled wheels for hilly terrain
- You prefer a lighter mower for easy maneuvering
- You require smart app control for scheduling
Verdict: Greenworks 80V 21in Push Mower delivers robust cutting power for users with medium lawns who do not need self-propulsion. It is ideal for those prioritizing runtime and cutting width over lightweight portability.
Specifications side by side
| Spec | Greenworks 40V 16-Inch Push Lawn Mower | Greenworks 80V 21-Inch Cordless Push Mower |
|---|---|---|
| Power Source | Cordless | 80V battery |
| Cutting Width | 16 in | 21 in |
| Voltage | 40V | 80V |
| Drive Type | Push | Push |
| Battery Capacity | 4.0 Ah | 4.0Ah |
| Runtime | not stated | Up to 60 min |
| Cutting Height | 5 position | 7 positions |
| Mowing Function | 2-in-1 (mulch, rear bagging) | 3-in-1 |
| Motor Type | not stated | Brushless |
| Application | Lawn | Yard, Lawn |
| Dimensions | 50.8 × 18.9 × 39 inches | 32.3 × 18.2 × 20.4 inches |
| Weight | 37.5 pounds | 74.1 pounds |
| Size | 16" Cordless (4.0Ah) | 21" Push |
| Color | Green | Black/Green |
| Model | 25322 | 2501202 |
Frequently asked questions
Is 80V better than 40V for thick grass?
Yes, higher voltage typically provides more power under load. The 80V Greenworks mower delivers robust cutting power suitable for medium lawns. It handles thicker grass better than the 40V model. The 40V version is lighter and best for small yards under one-third acre. Choose 80V if you prioritize cutting width and runtime over lightweight portability.
Can I use the same battery for both mowers?
Both models use a 4.0 Ah battery capacity. They share the same power source category, which is cordless. This suggests compatibility within the Greenworks 40V ecosystem. The 80V system may require specific battery solutions not explicitly listed. Check your existing tool compatibility before purchasing. The 40V mower is designed for users who prioritize tool compatibility.
Which mower is easier to store and move?
The 40V Greenworks 16-Inch Push Mower is easier to handle. It weighs only 37.5 pounds. The 80V model weighs 74.1 pounds, making it significantly heavier. The 40V unit measures 50.8 inches long, while the 80V unit is more compact at 32.3 inches long. If you prioritize low weight, the 40V option is the better choice for small yards.
What is the difference in cutting width?
The 80V mower offers a wider cutting path. It features a 21-inch cutting width. The 40V mower has a 16-inch cutting width. A wider deck allows you to cover more ground per pass. The 21-inch model is ideal for medium lawns. The 16-inch model fits narrow spaces and small yards under one-third acre. Choose based on your yard size.
Do these mowers have self-propelled drive?
No, neither model includes self-propulsion. Both the 40V and 80V Greenworks mowers use a push drive type. You must manually push the mower across the lawn. The 80V model delivers power for tough cuts but still requires physical effort to move. The 40V model is lighter, making it slightly easier to push manually in small areas.
Is the 80V mower too heavy for some users?
The 80V mower weighs 74.1 pounds, which is substantial. It is not designed for lightweight portability. The 40V model weighs 37.5 pounds, making it much easier to maneuver. If you have mobility issues or need to lift the mower often, the 40V option is preferable. The 80V model is best for users who do not need self-propulsion and prioritize power over weight.