Last Updated on December 18, 2025 by D. Ruddy
- Tired of wrestling with loud, polluting gas mowers and the hassle of extension cords? The Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools) offers a powerful and convenient solution for maintaining your lawn. This electric mower promises efficiency and ease of use, allowing you to tackle your yard work with less effort and more enjoyment.
- 80V 21” SELF-PROPELLED LAWN MOWER: Designed to get more done, faster, this mower can cut up to 1/2 acre on a single charge with its 4.0Ah battery, though this can vary based on grass condition and operator technique.
- BRUSHLESS MOTOR / DURABLE STEEL DECK: It boasts a sturdy 21-inch steel deck and a highly efficient brushless motor, which delivers increased torque, quieter operation, and a longer lifespan compared to brushed motors.
- SELF-PROPELLED: Featuring rear wheel drive with variable speed control, this mower ensures maximum traction, easy maneuverability, and precise control over your mowing experience.
- LED HEADLIGHT: High visibility LED lights are integrated, making it possible to mow in low-light conditions like early mornings or late evenings, and it operates at a noise level 3x quieter than gas-powered alternatives.
- 4-IN-1 SYSTEM: This versatile mower offers a 4-in-1 system, allowing you to mulch grass clippings, bag them for collection, side discharge them, or utilize a turbo leaf pickup function.
- The self-propelled rear-wheel drive system with variable speed control makes navigating hills and uneven terrain significantly easier, reducing user fatigue.
- The inclusion of LED lights is a thoughtful feature that extends mowing times into the early morning or late evening, offering flexibility for busy schedules.
- Its 4-in-1 cutting system provides excellent versatility, allowing users to choose their preferred grass clipping management method, from mulching to bagging or side discharge.
- The durability promised by the steel deck and the efficiency and longevity of the brushless motor suggest a robust and reliable piece of equipment.
- The quiet operation, being 3x quieter than gas, is a major advantage for users who value a more peaceful yard maintenance experience or live in noise-sensitive neighborhoods.
Key Features That Stand Out
Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools)
What We Like
Performance Analysis
The Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower appears to be engineered for robust performance. Its 80V system, powered by a 4.0Ah battery, is designed to cover up to half an acre, a respectable capacity for a cordless electric mower. The brushless motor is a key component, indicating strong power output and efficiency, translating to sustained cutting performance even in denser grass. The 21-inch steel deck is a good size for maneuverability and coverage, while the self-propelled function with variable speed control is crucial for comfort and control, particularly on slopes or for longer mowing sessions. The ability to mulch, bag, and side discharge offers adaptability to different lawn care preferences and conditions. The addition of LED lights is a practical enhancement for those who need to mow outside of typical daylight hours.
Best For
This mower is an excellent choice for homeowners with medium to large yards, particularly those looking to transition away from gas-powered equipment and seeking a quieter, more environmentally friendly alternative. It’s ideal for individuals who appreciate the convenience of cord-free operation and the ease of a self-propelled system, especially if their property includes slopes or varied terrain. The versatility of the 4-in-1 system makes it suitable for a wide range of lawn care needs, from neat mulching to efficient bagging. Those who appreciate advanced features like LED lighting for extended use will also find this model a strong contender. For users already invested in the Greenworks 80V platform, this mower offers great tool compatibility and power.
Buying Guide
Key Features to Look For
When considering a cordless electric mower like the Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools), pay attention to battery voltage and capacity (Ah) as they dictate power and runtime. Look for a brushless motor for increased efficiency and longevity. The deck size is important for coverage area, and a self-propelled feature with variable speed adds significant user comfort. A 4-in-1 cutting system (mulch, bag, side discharge) enhances versatility. Features like LED lights are beneficial for extended use. Finally, check for compatibility within a brand’s battery system, as with Greenworks’ 75+ compatible tools.
Important Materials
The primary material of concern for lawn mower decks is typically steel for durability and robust performance. The brushless motor utilizes advanced electrical components designed for efficiency and a longer lifespan. The battery housing and mower body will be made from durable plastics designed to withstand outdoor conditions.
Essential Factors to Consider
The size of your lawn is paramount; a 21-inch deck with a 4.0Ah battery is suitable for up to 1/2 acre. Consider the terrain of your yard – a self-propelled system is essential for hills. Your preference for grass clipping management (mulching, bagging, or side discharge) should align with the mower’s capabilities. If you plan to use other Greenworks tools, the compatibility with their 80V battery system is a significant advantage, allowing you to share batteries and chargers across a wide range of products.
Budget Planning
Cordless electric mowers, especially higher-voltage models with advanced features like self-propulsion and brushless motors, represent an investment. While the initial cost might be higher than basic gas mowers, consider the long-term savings on fuel, oil, and maintenance. The Greenworks 80V system, with its battery and rapid charger included, offers good value, especially when factoring in the ability to use the battery across 75+ compatible tools. Factor in potential future battery purchases if you have a very large lawn or want extended runtime.
When to Buy
The best time to buy a lawn mower is typically in the spring as the mowing season begins, as retailers often offer new models and promotions. However, looking for end-of-season sales in late summer or early fall can also yield significant discounts. If you need a mower immediately for an upcoming season, purchasing it as soon as possible ensures you have it ready and can take advantage of any early-season deals or simply avoid the rush.
Frequently Asked Questions
What is the maximum runtime on a fully charged 4.0Ah battery?
The Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower is rated to cut up to 1/2 acre with a fully charged 4.0Ah battery. Actual runtime can vary based on grass condition, length, and operator technique.
How does the self-propelled feature work?
The mower features rear wheel drive with variable speed control. This allows you to adjust how quickly the mower propels itself forward, making it easier to match your walking pace and navigate different terrains comfortably.
Is this mower quiet enough for use in a residential neighborhood?
Yes, electric mowers are significantly quieter than gas-powered ones. This Greenworks model is stated to be 3x quieter than gas mowers, making it a good choice for minimizing noise disturbance.
What are the 4-in-1 system options?
The 4-in-1 system means you can choose to mulch grass clippings back into the lawn, bag them for collection, side discharge them, or use a turbo leaf pickup function for dealing with heavier leaf debris.
How does the brushless motor benefit the mower?
A brushless motor is more efficient, provides more torque, operates more quietly, and generally has a longer lifespan compared to traditional brushed motors. This means more power for cutting and less wear and tear over time.
Can I use batteries from other Greenworks 80V tools with this mower?
Yes, this mower is part of the Greenworks 80V system, and its 4.0Ah battery is compatible with over 75 other Greenworks 80V tools, offering excellent system versatility.
Does the mower come with a charger?
Yes, this product includes a 4.0Ah battery and a rapid charger, so it is ready to use out of the box after the initial battery charge.
Final Thoughts
The Greenworks 80V 21″ Self-Propelled Cordless Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools) presents a compelling option for those seeking a powerful, efficient, and user-friendly alternative to gas mowers. Its robust 80V system, combined with the benefits of a brushless motor and a durable steel deck, promises reliable performance. The self-propelled functionality with variable speed control significantly enhances user comfort and control, while the 4-in-1 system offers great versatility. The inclusion of LED lights and the quieter operation further add to its appeal. For homeowners with yards up to half an acre who value convenience, power, and a greener approach to lawn care, this Greenworks mower stands out as a well-rounded and practical choice, especially for those already invested in or looking to build a Greenworks battery ecosystem.
