WORX Nitro Cordless Lawn Mower, 21" Elec vs Electric Lawn Mower, Self-propelled Lawn
Quick Verdict
The WORX Nitro Cordless 21" mower is the stronger choice for most homeowners who want reliable power, better cut quality, and a proven reputation. The 40V (2x20V) self-propelled model at $349.99 is a budget option that may appeal to price-sensitive buyers, but its lower rating and fewer features make it a compromise.
Side-by-Side
| Feature | WORX Nitro 21" | 40V (2x20V) 18" |
|---|---|---|
| Price | $429.99 | $349.99 |
| Power Source | 60V Max (2x20V in series?) | 40V (2x20V in parallel) |
| Cut Width | 21 inches | 18 inches |
| Speed Control | Variable speed self-propelled | Fixed speed (likely) |
| User Rating | 4.4/5 (244 reviews) | 3.7/5 (228 reviews) |
| Best Yard Size | 0.25–0.5 acre | Up to 0.25 acre |
Note: The WORX Nitro uses a higher-voltage 60V system (two 20V batteries in series), while the other uses 40V (two 20V batteries in parallel). The WORX also offers variable speed control for better maneuverability.
Where WORX Wins
Power and cut quality. The 60V system delivers more torque and runtime, especially in thick or damp grass. The 21-inch deck covers more ground per pass, reducing mowing time on medium lawns. Variable speed control lets you match pace to conditions—slower for dense areas, faster for open stretches.
Reputation and reliability. With a 4.4 rating from nearly 250 reviews, the WORX has proven performance. WORX is a well-known brand with good parts support and warranty service. The higher price reflects better build quality and features like a brushless motor and likely a longer battery life.
Features. The WORX Nitro typically includes a single-lever height adjustment, mulching/bagging/side-discharge options, and a foldable handle for storage. Variable speed is a genuine advantage for navigating slopes or thick grass.
Where the 40V Model Wins
Price. At $349.99, it costs $80 less than the WORX. If you have a small, flat lawn under 0.25 acre and want to save money, this could be sufficient.
Lighter weight. The 18-inch deck and lower-voltage system likely make this mower lighter and easier to push, even in self-propelled mode. If you need to carry the mower up stairs or store it in a tight space, the smaller size helps.
Potential battery compatibility. If you already own 20V tools from the same brand, this mower may share batteries, reducing initial cost. However, the 3.7 rating suggests mixed experiences with battery life and build quality.
Which Should You Buy
Choose the WORX Nitro 21" if: You have a medium lawn (0.25–0.5 acre), want reliable power for thick grass, and value features like variable speed and a larger cutting deck. The higher rating and brand reputation justify the extra cost. It’s the better long-term investment.
Choose the 40V (2x20V) 18" if: Your budget is tight, your lawn is small (under 0.25 acre) and flat, or you already own compatible 20V batteries from the same brand. Accept that you may sacrifice cut quality, runtime, and overall reliability—the 3.7 rating reflects these compromises.
For most buyers, the WORX Nitro is the clear winner: better specs, higher satisfaction, and more versatility for the