Greenworks 40V 21" Lawn Mower
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
 Amazon 30-day returns (in store too) | $298.99 | Aug 23, 2024, may have changed | Buy Now |
 Best Buy 15-day returns (in store too) · free return shipping · free shipping on $35+ | $459.99 | Aug 10, 2026, may have changed | Buy Now |
E Exit 15 Corporation | $539.94 | Jul 25, 2022, may have changed | Buy Now |
 Walmart Sold by Genes One Stop Smart Shop | $574.00 | May 13, 2025, may have changed | Buy Now |
 Bonanza | $610.99 | May 13, 2025, may have changed | Buy Now |
Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026). Some products and categories have different terms, so check with the store before you buy.
Used & Refurbished
✨ See 4 used & refurbished prices with ShopSavvy ProGet the app →Pros
- •Operates without gas or oil, making it eco-friendly and environmentally conscious.
- •Lightweight design (around 70 lbs) for easy handling and maneuverability, even with one hand.
- •Self-propelled feature reduces physical effort, especially helpful on hills and for larger lawns.
- •Powerful 40V battery provides consistent performance and can cover up to a full acre with additional batteries.
- •Quiet operation enhances mowing comfort without the noise of gas engines.
- •Simple push-button start and easy assembly make setup quick and frustration-free.
- •Compact, folding design allows for easy storage and can stand upright to save space.
- •Delivers a nice cut with satisfactory results for regular lawn maintenance.
- •Includes a 5.0Ah battery and charger, with a recharge time of about 45 minutes.
- •Eco-friendly and low emissions, with minimal vibration and noise.
Cons
- •Battery life can be limited; self-propelled function drains battery quickly, necessitating additional batteries for longer sessions.
- •Struggles with very tall, wet, or thick grass and may bog down on inclines.
- •Charging can be less efficient in high temperatures, possibly extending downtime.
- •Slightly heavier than initially expected, which may affect extended use.
- •Performance may be inferior to gas-powered mowers, especially in tough, dense grass.
- •Takes some time to reach full cutting speed and may bog on steep hills.
- •Battery runtime of around 20-30 minutes might not be enough for larger lawns.
- •Limited battery life means more planning for bigger yards or multiple sessions.
- •Batteries may need to be replaced sooner if used heavily.
Bottom Line
For those seeking a quiet, eco-friendly alternative to traditional gas mowers, the Greenworks 40V 21" Brushless Cordless Lawn Mower is a strong contender—especially if your lawn is under an acre and you value ease of use over heavy-duty performance. Its self-propelled feature and lightweight design make for a comfortable mowing experience, but keep in mind that battery life is a little limited if you have a large or challenging yard. If extended runtime or tackling thick, tall grass regularly is a priority, you might want to consider a gas mower or an additional battery setup.
What Reviewers Are Saying
📚More About Greenworks 40V 21" Lawn Mower
Discussion
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