If you’re considering upgrading your lawn care game, you’ll want to know which 21-inch self-propelled mowers stand out in 2025. These models combine power, ease of use, and eco-friendliness, but their features vary from brushless motors and adjustable heights to battery capacity and durability. We’ve tested them on sprawling yards and tight corners, evaluating runtime, maneuverability, and noise levels. Intrigued? The best picks might just transform how you approach yard work—stick around.
40V Cordless Self-Propelled 21.1-Inch Lawn Mower, 3-in-1 Brushless Electric, 6-Position Height, Dual 8.0Ah Batteries & Charger
- Up to 60 min runtime: This 2x20V battery-powered lawn mower features a brushless motor, providing up to 60 minutes of operation with the self-propelled function...
- Brushless Motor : This electric lawn mower, with a durable 21 inch steel deck and a powerful brushless motor reaching up to 3500 RPM, offers efficient mowing,...
- CUSTOMIZE YOUR PACE & ENJOY PUSH-FREE MOWING: This self-propelled electric lawn mower takes the effort out of mowing. Just steer it as you stroll at your chosen...
Looking for a lawn mower that’s easy to use and good for the environment? The V Cordless Self-Propelled 21.1-Inch Lawn Mower might be just what you need. It runs on a 40V battery and comes with two 8.0Ah batteries. That means you can mow your yard for up to 60 minutes without stopping. It’s great for big lawns since it helps you finish faster and with less effort.
The mower has a strong steel deck, which makes it last a long time. It can do three things: side discharge, mulch, or collect grass in the bag. You can choose what works best for your yard. There are six height settings, so you can cut the grass short or leave it taller. The quiet brushless motor runs smoothly and uses less energy. The mower is lightweight, so it’s easy to push around.
This mower is good for people with large yards who want a quiet, eco-friendly, and simple machine. It doesn’t need gas or oil, so it’s cleaner and easier to maintain. It also has a self-propelled feature and adjustable speed, which makes mowing less tiring. You can switch between the different cutting options easily.
Some users find that the battery lasts around 26 to 40 minutes, so it might not be enough for very big yards. The grass collection bag is small, so you’ll need to empty it often. Also, the instructions for putting the mower together can be a little unclear.
Greenworks 80V Cordless Lawn Mower, Leaf Blower & String Trimmer (Battery & Charger included)
- High-Powered Performance: This lawn mower blower combo kit offers 80Volts of power, a 21-inch steel deck, and a brushless motor for efficient and reliable lawn...
- Versatile 3-in-1 Functionality: With its 3-in-1 system, this combo kit allows you to mulch, rear bag, or side discharge grass clippings, giving you flexibility...
- Convenience and Efficiency: The kit includes 4Ah USB batteries and a 4A rapid charger, ensuring you have the power you need when you need it, along with LED...
The Greenworks 80V Cordless Lawn Mower, Leaf Blower, and String Trimmer set is a great choice for yard work. It includes a 21-inch brushless self-propelled mower, a leaf blower with 580 CFM, and a 16-inch string trimmer. All tools run on an 80V battery system. The set comes with a fast charger and extra batteries, so you can work longer without stopping.
The brushless motor makes the tools more reliable and efficient. The mower has a steel deck that makes it durable. You can control the speed, change the cutting height, and choose different ways to discharge grass. This set works well for all kinds of yard jobs, from thick grass to trimming around plants.
This set is good for homeowners and landscapers. It offers reliable power, is eco-friendly, and is quiet compared to gas tools. The tools are lightweight, and the self-propelled mower helps make mowing easier and less tiring.
A downside is that the handle knobs can sometimes spin off, so you might need to tighten them with another fastener. The grass bag is heavy and can be tricky to empty. Also, if you hit something hard with the blades, you will need to replace them. Still, this set makes yard work easier and cleaner, with less noise and fumes, helping you keep your yard tidy with less effort.
Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower with Battery and Charger
- [80V 21” SELF-PROPELLED LAWN MOWER] - Get more done, faster, with Greenworks electric lawn mowers. This 80V lawn mower cuts up to 1/2 acre with a fully...
- [BRUSHLESS MOTOR / DURABLE STEEL DECK] - This electric mower features a durable 21" deck, and a highly efficient brushless motor that provides more torque,...
- [SELF-PROPELLED] – Rear wheel drive and variable speed control for maximum traction, maneuverability, and control
The Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower is a great choice if you want a quiet, eco-friendly lawn mower that has plenty of power. It’s built for big yards. It has an 80V rechargeable battery that keeps it running. The 21-inch steel deck is strong and durable. It has a brushless motor that gives 30% more torque. This helps it cut through thick grass and weeds easily.
The mower moves by itself with its self-propelled feature. You don’t have to push hard, which makes mowing easier, even on hills. It weighs 75 pounds, which makes it lighter than many gas mowers. It offers different ways to mow: mulching, bagging, or side discharge. It also has LED headlights to help you mow early in the morning or late at night. Plus, the battery recharges quickly.
Best for: homeowners with large yards who want a quiet, clean, and powerful mower that is easy to use.
Pros:
- Strong 80V motor with extra torque for thick grass
- Self-propelled with adjustable speed for easy handling
- Quiet and eco-friendly, with no harmful fumes
Cons:
- The grass bag is small and may need emptying often during big jobs
- It might not be strong enough for very tall or thick grass without turbo mode
- Some users say the handle hinges and deck parts could be stronger
This mower is a good choice if you want an easy-to-use, quiet, and powerful tool for your yard.
Factors to Consider When Choosing 21 Self Propelled Lawn Mower
When choosing a 21-inch self-propelled lawn mower, you’ll want to examine compatibility with your preferred power source, whether that’s battery, gas, or corded electric—each has its quirks. Think about the cutting width and height adjustments, which directly impact how efficiently you can manicure different lawn sizes and terrains, making yard work less like a marathon and more like a walk in the park. Also, pay attention to battery runtime and weight, since a lightweight mower with a long-lasting battery can make your mowing session feel less like a workout and more like a casual stroll.
Power Source Compatibility
Have you thought about whether your lawn mower’s power source matches what your yard needs? It’s important because the type of power—battery, gas, or manual—affects how easy and how well your mower works. For battery mowers, check the voltage and how long it runs. This helps you know if it’s right for your yard size. Gas mowers need the right fuel type and good fuel efficiency so they run smoothly. Manual mowers don’t need fuel or batteries but take more effort to push. Think about if the power source gives you the mobility you want. Batteries let you move freely, gas is stronger for tough patches, and manual is good for small yards. Picking the right power source makes sure your mower works for you and not against you.
Cutting Width Suitability
Choosing the right cutting width for a 21-inch self-propelled lawn mower matters. It’s not just about picking a size. You want to match the deck width to your yard. If your yard is big, a 21-inch deck works well. It covers more ground quickly but still lets you turn easily. Larger decks, like 21 inches or more, help you mow faster on open areas. Smaller decks, under 20 inches, are better for tight spaces or yards with lots of trees and flower beds. They are easier to get around obstacles.
Wider decks can be harder to control near trees and garden beds. Smaller decks can cut your mowing time. The key is to find a size that helps you mow fast but also gives you good control. The right choice will save you time and energy. It’s about balancing speed with precision so your yard looks great without extra effort.
Adjustable Cutting Height
Adjustable cutting height is a useful feature on a 21-inch self-propelled lawn mower. It lets you change how tall or short the grass is. Usually, you can choose a height between 1 and 3 inches or more. This gives you control over how your lawn looks and stays healthy. Most mowers have six or more height settings. You can pick the best height for the type of grass or terrain you mow. Changing the height is easy. You usually turn a lever or dial, which keeps the process quick. Using this feature helps prevent cutting too low or uneven patches. It works well on hills or uneven ground. Overall, adjustable cutting height keeps your yard looking neat and healthy.
Battery Runtime & Charge
Battery life and how much charge a lawn mower can hold are important when choosing a 21-inch self-propelled mower. The battery doesn’t last the same on every model. Some can run for about 26 to 40 minutes, which is good for small yards. Others last up to 75 minutes, great for bigger lawns. The size of the battery, or its capacity, measured in amp-hours (Ah) or watt-hours (Wh), tells you how long the mower can run before needing a recharge. Fast chargers can fill the battery in about 30 to 60 minutes, helping you get back to mowing quickly.
Over time, the battery may not hold as much charge. Repeated charging can make the battery less effective. Also, if the battery is compatible with other tools, it can save you time and money because you can use the same battery for different devices.
Maneuverability & Weight
Even if you’re excited to get your yard work done quickly, the mower’s size and how easy it is to control matter a lot. A mower that moves smoothly makes it easier to steer around trees, flower beds, and tight spaces. If the mower is lighter, it’s easier to lift, push, and turn, especially on hills or uneven ground. Mowers with rear-wheel drive are usually easier to handle than front-wheel drive models. Features like adjustable speed and movable wheels can help you change how the mower works for different parts of your yard. Picking a mower that isn’t too heavy and that is easy to steer can help you work faster and feel less tired. This way, you spend more time enjoying your nice lawn and less time struggling with your mower.
Maintenance & Durability
When picking a 21-inch self-propelled lawn mower, it’s important to think about how easy it is to take care of and how long it will last. A strong mower usually has a steel deck and good parts that can handle regular use and outdoor weather. Newer models with brushless motors work better and stay good longer, so you don’t have to replace them as often. Keeping your mower clean and checking the drive system helps it last more years. Choose a mower made with quality materials and strong parts. This helps prevent rust and mechanical problems. Changing dull blades and checking the battery now and then keep your mower working well. This way, you won’t have to worry about it breaking in the middle of mowing your yard.
FAQs
How Long Does the Battery Typically Last per Use?
Your battery typically lasts between 45 to 90 minutes per use, depending on the mower model, grass thickness, and terrain. To maximize runtime, keep your battery charged and avoid mowing in extremely high or wet grass.
Are These Mowers Suitable for Uneven Terrains?
Yes, these mowers are suitable for uneven terrains because they feature adjustable height settings, sturdy tires, and self-propelling mechanisms, allowing you to navigate rough spots comfortably and maintain an even cut across varied surfaces.
What Maintenance Is Required for Self-Propelled Mowers?
You should regularly check and replace the oil, clean the blades and undercarriage, inspect and tighten belts, change the spark plug annually, and keep your mower free of debris to guarantee peak performance and longevity.
Can I Upgrade the Battery to Extend Mowing Time?
Yes, you can upgrade the battery to extend mowing time if your mower allows for compatible, higher-capacity batteries. Always check your mower’s specifications and manufacturer recommendations before replacing or upgrading batteries to guarantee safety and proper functioning.
Are These Mowers Environmentally Friendly Options?
Yes, these mowers are generally environmentally friendly, especially if they’re electric or battery-powered. They produce less pollution, reduce noise, and use sustainable energy sources, helping you maintain your lawn while minimizing your ecological footprint.
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