80V 21 inch GEN 2 Cordless Battery Push Lawn Mower(Auto Switch) w/ 4.0Ah Battery & Charger
- Power Source: 80V Cordless Battery
- Cutting Deck Size: 21 inches
- Torque: 2x More Torque for Tough Grass
- Cutting Options: 4-in-1 System – Mulch, Bag, Side Discharge, Turbo Leaf Pickup
- Battery Capacity: 4.0Ah Lithium-Ion Battery Included
- Start Type: Push Button Start
- Run Time Enhancement: Auto-Switch Technology for Longer Use
- Weight: 40.0 pounds
As a reviewer with many years of experience testing walk-behind lawn mowers, I understand what makes a mower truly reliable and efficient. I have carefully studied and used the 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower by Greenworks to give you honest and clear insights. This review is based on thorough research and hands-on testing, so you can trust the information to help you decide if this mower is right for your lawn. My goal is to provide a simple and detailed analysis that will guide you to the best choice for your yard care needs.
Pros & Cons
What We Loved
- ✅ Powerful 80V motor with 2x torque
- ✅ Convenient Push Button Start
- ✅ Versatile 4-in-1 mowing options
- ✅ Auto-Switch technology for extended run time
What Could Be Better
- ❌ Battery weight adds to overall mower weight
- ❌ Limited to 21-inch cutting deck size
- ❌ May require additional batteries for large yards
Who Should Buy This
This 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower is perfect for homeowners with medium to large lawns. It is great for those who want a quiet, easy-to-use mower without the hassle of gas and cords. If you like the idea of a lightweight mower that starts with a push of a button and has a long-lasting battery, this mower is for you. It works well on flat or slightly uneven lawns and is ideal for people who care about the environment and want to reduce noise and pollution.
This mower may not be the best choice for those with very large or very rough yards. If your lawn has many hills, thick brush, or tall grass, a more powerful gas mower might be better. Also, if you need a mower for commercial or heavy-duty use, this battery mower might not handle the tough job as well. Finally, if you do not want to keep track of charging batteries, a traditional gas mower might suit you better.
Technical Specifications
Key Details
- Brand: Greenworks
- Model: LMB454
- Size: 23.62″ x 17.52″ x 37.4″
- Weight: 40.0 pounds
- Material: Durable steel deck with plastic components
- Color Options: Green
- Special Features: 80V GEN 2 motor, 21-inch cutting deck, Auto Switch technology, cordless operation
- Battery: 4.0Ah 80V Lithium-ion
- Charger: Included fast charger
- Warranty: 4-year tool warranty, 2-year battery warranty
Our Testing Experience
First Impressions
When I first took the 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower out of the box, I was impressed by its size and solid build. It felt sturdy but not too heavy, which made me feel confident it could handle my yard. The push button start was super easy to use—no more struggling with a pull cord! I charged the 4.0Ah battery fully before the first mow, and I was excited to see how it would perform on my thick, overgrown grass.
Daily Use
Using the mower day-to-day was a breeze. The 21-inch deck cut through tall grass quickly, and I loved how smooth it was to push around. The mower handled my uneven yard well without feeling like it was going to get stuck. I tried all four cutting options—mulching, bagging, side discharge, and turbo leaf pickup—and each worked exactly as promised. The turbo leaf pickup was especially handy when clearing fallen leaves after a windy day.
Key Features in Action
The 2x more torque really made a difference when cutting through thick patches of grass. I didn’t have to go over the same area twice, which saved me a lot of time. The push button start was convenient, especially when I just wanted to get going quickly. Also, the 4-in-1 system gave me flexibility depending on the yard’s needs. Switching between modes was simple and didn’t require tools, which I appreciated.
Long-Term Performance
After several weeks of regular use, the mower still runs strong. The battery holds a good charge and lasts long enough to mow my entire yard without needing a recharge. I haven’t noticed any loss in power or cutting quality. Maintenance has been easy too, with quick cleanup after use. Overall, it’s been a reliable tool that makes lawn care less of a chore.
How It Compares
Side-by-Side Comparison
| Feature | 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower | EWORK 40V 14″ Cordless Electric Mower | Greenworks 80V 21″ Brushless Mower |
|---|---|---|---|
| Price | See Price | See Price | See Price |
| Quality | Delivers 2x more torque for tackling tough yards with a durable 21″ deck; designed for ultimate lawn mastery and long-lasting performance. | Strong 40V system with upgraded 3800RPM motor offering high torque; lightweight 21 lbs design ideal for easy maneuvering; quiet operation. | Efficient brushless motor for more torque and quiet operation; durable 21″ cutting deck built for quick and efficient mowing. |
| Features | 21″ deck with 4-in-1 system: Mulch, Bag, Side Discharge, Turbo Leaf Pickup; Push Button Start; Auto Switch technology; includes 4.0Ah battery & charger. | 14″ deck with 6 height adjustments (0.86″-2.44″); powered by two 20V 4.0Ah batteries; lightweight with 7″ wheels for smooth maneuvering; quiet electric motor. | 21″ deck; brushless motor; up to 60 minutes runtime with included 4.0Ah battery and 60-minute rapid charger; compatible with 75+ Greenworks tools. |
| Best For | Homeowners needing a powerful, versatile mower for tackling tall grass and tough yards with multiple cutting options. | Users with small yards or gardens seeking a lightweight, easy-to-handle mower with adjustable cutting heights. | Those looking for a quiet, efficient mower with long runtime and compatibility with a broad ecosystem of tools. |
In my opinion, this 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower stands out because it combines powerful torque with a large 21″ deck and versatile 4-in-1 cutting options, making it ideal for tough yard conditions. Its push button start and auto switch feature add convenience not matched by the competitors. If you’re like me and prefer a mower that can handle demanding lawn care tasks effortlessly while offering multiple discharge choices, this is the better choice.
Customer Feedback on 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower(Auto Switch) w/ 4.0Ah Battery & Charger
Overall Satisfaction
Customers generally express moderate satisfaction, appreciating the mower’s power and battery life, though some note room for improvement in usability and durability.
Most Praised Features
- Strong cutting performance and ability to handle thick grass effectively.
- Long-lasting 4.0Ah battery provides ample runtime for medium-sized lawns.
- Lightweight design makes it easy to maneuver and push around the yard.
Common Concerns
- Some users report issues with the auto switch feature and occasional battery connectivity problems.
- Build quality and plastic components feel less durable compared to other brands.
Who Loves It Most
This mower is favored by homeowners with medium-sized lawns looking for a cordless, environmentally friendly alternative to gas mowers who prioritize ease of use and decent battery life.
Is It Worth the Price?
Price Analysis
The 80V 21 inch GEN 2 Cordless Battery Push Lawn Mower is competitively priced within the mid to high range for cordless mowers with similar power and features. Considering it includes a 4.0Ah battery and charger, the price is fair and reflects the value offered.
Value Features
- 21″ Deck Size – Efficiently cuts large areas and tall grass, saving time and effort.
- 2x More Torque – Powerful motor ensures tougher mowing jobs are handled with ease.
- 4-in-1 System – Versatile mulching, bagging, side discharge, and turbo leaf pickup options increase usability.
- Auto-Switch Technology – Extends runtime by automatically switching between batteries, reducing downtime and enhancing productivity.
Vs. Competitors
Compared to other cordless push mowers with similar battery voltage and deck size, this model offers superior torque and the unique Auto-Switch feature at a comparable price, making it a strong contender for value-conscious buyers.
Final Verdict
If you need a powerful, versatile, and convenient cordless mower with long runtime, the 80V 21 inch GEN 2 is worth the investment. Its features justify the price, especially for medium to large yards.

