Product Review: Greenworks 40V 21″ Brushless Cordless Self-Propelled Electric Lawn Mower, String Trimmer, 5.0Ah Battery and Charger
Introduction
If you’re shopping to buy a dependable cordless mower that pairs performance with convenience, the Greenworks 40V mower bundle is worth a close look. This 21″ brushless mower and trimmer combo promises quiet operation, low maintenance, and the portability of battery power. In this review I’ll cover the features, real-world performance, pros and cons, and whether this cordless self-propelled mower is right for your yard.
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What is this product?
The Greenworks 40V 21″ set is a brushless cordless mower and edger/trimmer kit designed for medium suburban lawns. The package includes a 21″ steel deck self-propelled mower driven by a brushless motor, a 12″ string trimmer with an auto-feed head, and a 5.0Ah battery with a rapid charger. This electric lawn mower promises up to ~45 minutes of runtime on a single charge (actual runtime varies with grass conditions and cutting height).
Who manufactures it?
Greenworks is a well-known brand in battery-powered outdoor tools. Their 40V line is designed for homeowners who want the convenience of a gas-free, low-maintenance mower and trimmer without losing cutting power.
Key Features
- 40V Brushless Motor: More torque, quieter operation, and longer motor life compared to brushed motors.
- Durable 21″ Steel Deck: Single-lever 7-position height adjustment for flexible cutting heights.
- 3-in-1 Cutting: Rear bag, side discharge, and mulching capabilities for different yard needs.
- Self-Propelled Rear-Wheel Drive: Better traction for slopes and tougher terrain.
- 5.0Ah Battery & Rapid Charger: Up to 45 minutes runtime; battery works across Greenworks 40V platform.
- 12″ String Trimmer: .065″ dual-line auto-feed head and variable speed trigger for precise edging and trimming.
- Vertical Storage: Save up to 70% space with vertical storage capability.
- Maintenance Free: No gas, no oil, no tune-ups — starts instantly and runs quietly.
Detailed Description
The heart of this 5.0Ah battery mower is a brushless motor paired with a 21-inch steel deck. Brushless technology reduces wear and electrical loss, delivering more consistent torque when you need it — particularly helpful in denser or damp grass. The single-lever height adjustment gives seven positions so you can dial in a clean cut from short to longer turf.
The included Greenworks string trimmer is a solid companion for edging near flowerbeds, fences, and sidewalks. Its .065″ dual-line head uses auto-feed to reduce downtime and a variable speed trigger to conserve battery life when you don’t need full power.
On a full charge, the 5.0Ah battery should deliver up to ~45 minutes of runtime under moderate conditions — enough for typical medium lawns. The rapid charger gets you back to work quickly between sessions, and the battery is cross-compatible with other Greenworks 40V tools if you collect the ecosystem.
Pros and Cons
Pros
- Quiet & clean: Electric operation eliminates gas fumes and most engine noise.
- Brushless efficiency: Longer motor life and better torque for thicker grass.
- Convenient combo: Mower and trimmer in one package with a 5.0Ah battery and charger.
- Easy storage: Vertical storage saves space for garages and sheds.
- Maintenance-free: No oil or spark plugs to worry about.
Cons
- Runtime varies: Heavier, wet, or tall grass reduces the advertised runtime.
- Battery weight: The 5.0Ah battery adds weight — helpful for traction but heavier to move by hand.
- Not for very large properties: If you have several acres, multiple batteries or a larger platform might be required.
Who Should Buy This Product
This package is best for homeowners with small-to-medium suburban yards who want a quiet, low-maintenance solution. If you want to buy 40V cordless mower to replace a gas mower, or are looking to purchase brushless cordless mower technology with a trimmer included, this is a compelling bundle. It’s especially attractive if you value:
- Easy-start, low upkeep tools
- Light to moderate mowing tasks (up to about half an acre depending on terrain)
- Storage space constraints (vertical storage helps)
- Desire for a combo kit including mower, string trimmer, battery and rapid charger
Comparison with Similar Products
Compared to 20V cordless mowers, the Greenworks 40V mower delivers noticeably more power and longer runtime. Against larger 60V systems, the 40V finds a balance between weight, cost, and performance — often at a lower price point. If you’re comparing the 21-inch brushless mower and trimmer kit for medium lawns with long runtime to value-oriented 13–16″ electric mowers, the 21″ deck covers more swaths per pass and reduces mowing time.
For buyers focused on price, check the 21 inch self-propelled mower price and search for cordless mower bundle deal offers — the combo nature of this kit (mower + trimmer + battery + charger) often represents strong value versus buying items separately.
Where to Buy / CTA
If you want to order cordless lawn mower online or find the best price self-propelled mower, the official listing on Amazon is a convenient place to compare price, shipping and current bundle offers. Look for promotions that include free shipping or additional batteries.
Frequently Asked Questions
How long does the battery last?
The included 5.0Ah battery is rated for up to about 45 minutes under moderate conditions. Actual runtime depends on grass height, thickness, terrain, and cutting height.
Is the mower true self-propelled?
Yes — it’s rear-wheel drive which helps traction on slopes and uneven ground. It’s best for slopes and hills within homeowner safety guidelines.
Can I buy extra batteries or a replacement charger?
Yes — extra Greenworks 40V batteries and chargers are sold separately. If you need longer runtime for larger yards, purchasing a spare 5.0Ah battery is a good idea.
Final Verdict
Overall, the Greenworks 40V mower 21″ brushless cordless self-propelled kit is a strong choice for homeowners who want a quiet brushless electric mower ideal for suburban backyards and a lightweight cordless self-propelled mower designed for slopes and hills. The combo of mower and trimmer, plus a 5.0Ah battery and rapid charger, makes this a convenient, maintenance-free alternative to small gas-powered mowers.
If you want to buy a mower with battery and charger for sale as a complete set, or search for a cordless mower free shipping offer, check the link below for the latest price, availability, and customer reviews.
Also see our broader guide: Best Electric Lawn Mowers Review
Final verdict reference: Electric Lawn Mowers Review