BLACK+DECKER Weed Eater, Lawn Edger and Cordless vs Greenworks 40V 16" Cordless Lawn Mower
Updated July 2026 — BLACK+DECKER Weed Eater, Lawn Edger and Cordless wins on price and versatility, Greenworks 40V 16" Cordless Lawn Mower wins on warranty and weight.
The BLACK+DECKER Weed Eater offers versatile functionality at a lower price, while the Greenworks mower excels in lightweight design and runtime efficiency.
Why BLACK+DECKER Weed Eater, Lawn Edger and Cordless is better
Price
BLACK+DECKER is $110 cheaper.
Versatility
3-in-1 functionality as trimmer, edger, and mower.
Battery
Includes two batteries for extended use.
Why Greenworks 40V 16" Cordless Lawn Mower is better
Weight
35% lighter for easier maneuverability.
Runtime
40 minutes of runtime on a single charge.
Warranty
3-year warranty for tool and battery.
Overall score
Specifications
| Spec | BLACK+DECKER Weed Eater, Lawn Edger and Cordless | Greenworks 40V 16" Cordless Lawn Mower |
|---|---|---|
| Battery | 20V | 40V |
| Cutting Width | 12 inches | 16 inches |
| Weight | 35 lbs | 23 lbs |
| Runtime | 30 mins | 40 mins |
| Functionality | 3-in-1 | 2-in-1 |
Dimension comparison
Overview of the BLACK+DECKER Weed Eater and Greenworks 40V Mower
When comparing the BLACK+DECKER Weed Eater and the Greenworks 40V Cordless Lawn Mower, the most striking difference is their pricing and functions. The BLACK+DECKER model retails for $169.00, making it about 39% cheaper than the Greenworks mower, which is priced at $279.99. Each product offers unique features tailored to specific landscaping needs, appealing to different types of users looking for lawn care solutions.
Design and Build Quality
The design of the BLACK+DECKER Weed Eater is centered around versatility. This 3-in-1 combo allows users to switch from a trimmer to a mower or edger easily. Its compact design is ideal for challenging spaces, making it suitable for smaller yards and slopes. In contrast, the Greenworks 40V mower features an ultra-lightweight build that is 35% lighter than traditional models, enhancing maneuverability. Its 16-inch cutting deck is ergonomically designed for ease of use, allowing for comfortable operation during longer mowing sessions.
Performance and Power
Performance-wise, the BLACK+DECKER Weed Eater is powered by a 20V battery system that provides continuous operation with its automatic feed spool, ideal for tackling dense grass and weeds. It features PowerDrive technology, ensuring efficient performance even in challenging conditions. On the other hand, the Greenworks mower runs on a robust 40V battery, offering about 40 minutes of runtime on a full charge. This gas-like performance makes it suitable for yards up to 1/3 acre, making it ideal for medium-sized lawns.
Versatility and Functionality
The BLACK+DECKER Weed Eater shines in versatility, functioning as a trimmer, edger, and mower—all in one unit. This 3-in-1 functionality allows you to complete various lawn tasks without needing multiple tools. The Greenworks mower, while primarily a lawn mower, does offer a 2-in-1 mulching and rear-bagging system, providing some flexibility in grass clippings management. However, it does not match the multifunctionality of the BLACK+DECKER model, which might appeal to those looking for an all-in-one solution.
Battery and Runtime
When it comes to battery life and management, the GREENWORKS model boasts a 4.0Ah battery that charges in about two hours, providing a solid 40 minutes of runtime. This is efficient for small to medium lawns but may fall short for larger areas. The BLACK+DECKER Weed Eater includes two batteries in its package, allowing for extended use without waiting for a recharge. This feature ensures that users can quickly switch out batteries to continue working, making it suitable for longer lawn care sessions.
Maintenance and Operation
The ease of maintenance is another differentiating factor. The BLACK+DECKER Weed Eater requires minimal upkeep due to its automatic feed spool, which eliminates the need for manual line adjustments. This means users can enjoy uninterrupted operation without the hassle of frequent maintenance. Conversely, the Greenworks mower promotes zero maintenance with no gas or oil costs, reducing overall expenses in the long run. Its whisper-quiet operation at less than 75 decibels makes it suitable for residential areas, allowing for early or late mowing without disturbing neighbors.
Warranty and Customer Support
Both products come with warranties, but the Greenworks mower offers a more comprehensive package. It includes a 3-year warranty for both the tool and battery, ensuring long-term support for buyers. The BLACK+DECKER model provides a 2-year limited warranty, which is slightly less appealing. This extended warranty from Greenworks could provide buyers with added peace of mind regarding their investment.
Which should you buy?
Choosing between the BLACK+DECKER Weed Eater and the Greenworks 40V mower largely depends on your specific lawn care needs and budget. The BLACK+DECKER is significantly cheaper at $169.00 and offers versatile functionality as a trimmer, edger, and mower, making it an excellent option for those with smaller, more complex lawns. However, if you prioritize lightweight design and battery efficiency for medium-sized lawns, the Greenworks mower, priced at $279.99, may be the better investment, especially with its extended warranty and zero maintenance benefits. Ultimately, both products excel in their respective areas, and your choice should reflect your lawn care requirements and preferences.

