Greenworks 60V 21" Dual-Blade Self-Propelled Lawn Mower with (2) 5.0 Ah Batteries & Rapid Charger Review

Overview

The Greenworks 60V 21" Dual-Blade Self-Propelled Lawn Mower is a battery-powered workhorse designed for homeowners with medium-sized lawns who want gas-like cutting performance without the maintenance headaches. This kit comes with two 5.0 Ah batteries and a rapid charger, making it ideal for yards up to about 1/3 acre. It’s built for those who value convenience, quieter operation, and instant start—no pull cords, no fuel mixing, no trips to the gas station.

Who Should Buy This

• Homeowners with 1/4 to 1/3 acre lawns – The two 5.0 Ah batteries give you enough runtime to handle most suburban lots on a single charge cycle, especially if you mulch rather than bag.
• Anyone tired of gas engine upkeep – If you’re done dealing with stale fuel, oil changes, carburetor cleanings, and pull cords that fight back, this mower is your ticket to a simpler Saturday morning.
• Bagging enthusiasts – The dual-blade system and rear bagger do an excellent job of lifting and capturing grass, even in slightly damp conditions. It’s a strong choice if you prefer a manicured, bagged look.
• Hillside owners needing reliable self-propel – The variable-speed self-propel system is responsive and can handle moderate slopes without bogging down, making it easier on your back and arms.

Key Features Breakdown

• 60V 21" Dual-Blade System – Two blades stacked on a single spindle create a vacuum effect that lifts grass for a cleaner cut and better bagging. This isn’t just marketing hype; the dual blades actually reduce clumping and leave a finer clippings profile when mulching. The 21-inch deck is a sweet spot—wide enough to cover ground quickly, narrow enough to maneuver through gates.
• 2x 5.0 Ah Batteries & Rapid Charger – A 5.0 Ah battery is the Goldilocks size: enough capacity for real work but not so heavy that it makes the mower feel unbalanced. The rapid charger refills a drained battery in about 60 minutes. With two batteries, you can swap and keep going while the other charges, effectively doubling your runtime.
• Self-Propelled with Variable Speed – A squeeze-bar trigger lets you adjust ground speed from a crawl to a brisk walk. This is critical for matching pace to grass thickness or slope steepness. The rear-wheel drive provides good traction on inclines.
• 7-Position Single-Point Height Adjustment – One lever adjusts all four wheels simultaneously from 1.5 to 4 inches. That means you can drop it low for a final fall cut or raise it high for warm-season grasses like Bermuda without crawling around each wheel.
• Brushless Motor – Brushless motors are more efficient, quieter, and last longer than brushed alternatives. They also deliver instant torque, so you won’t feel a bog-down when hitting thick patches.
• 3-in-1 Capability – Mulch, bag, or side-discharge. The mulching plug is easy to install, and the bagger attaches without tools. The side-discharge chute is useful for tall grass that you need to knock down quickly.

Pros

1. Excellent bagging performance – The dual-blade design creates strong airflow that lifts grass into the bag efficiently. Even slightly damp grass clogs less than with single-blade competitors.
2. Instant start, zero drama – Push a button, squeeze the bar, and go. No priming, no choke, no yanking. This is the biggest quality-of-life upgrade over gas mowers.
3. Quiet operation – At roughly 75 decibels, you can mow early Saturday morning without waking the neighborhood or needing hearing protection.
4. Good runtime with two batteries – Expect 45–55 minutes of continuous mowing per pair (mulching on a 3-inch cut). That’s enough for most 1/4-acre lawns with a bit leftover for edging.
5. Solid build quality – The deck is durable steel, the handles feel sturdy, and the folding mechanism for storage is straightforward. It doesn’t rattle or feel cheap during use.
6. Low maintenance – No oil changes, no spark plugs, no air filters. Just sharpen the blades once a season and keep the battery contacts clean.

Cons

1. Heavy when batteries are installed – At about 75 pounds with both batteries, it’s not a lightweight. Maneuvering in tight spaces or lifting it into a truck bed can be a strain.
2. Batteries are proprietary and expensive – Replacement 5.0 Ah batteries run about $200 each. If you lose one or it fails after warranty, that’s a significant cost.
3. Self-propel can feel jerky at low speeds – The variable-speed trigger is sensitive, and it takes practice to find a smooth, consistent pace. Some users report a stutter when starting from a stop.
4. Side-discharge chute is flimsy – The plastic chute feels thin and can crack if you bump it against a fence or rock. It works fine, but it’s a weak point in an otherwise solid build.

Bottom Line

The Greenworks 60V 21" Dual-Blade mower is a strong contender for anyone ready to ditch gas without sacrificing cut quality. Its dual-blade system delivers impressive bagging and mulching results, the brushless motor provides reliable torque, and the two-battery kit gives you enough runtime for most suburban lawns. It’s not the lightest mower, and the self-propel takes some getting used to, but the convenience of instant start, quiet operation, and near-zero maintenance makes it a winner. If you have a 1/4- to 1/3-acre lawn and value your Saturday mornings, this is a smart buy.

Frequently Asked Questions

Q: How long does it take to fully charge one 5.0 Ah battery with the included rapid charger?
A: About 60 minutes for a fully depleted battery. If you’re swapping between two batteries, you can keep mowing continuously by charging one while using the other.

Q: Can I use this mower on thick, wet grass without clogging?
A: The dual-blade system handles damp grass better than most battery mowers, but you should still avoid soaking-wet grass. For thick, dry grass, it mulches well with the plug installed. For bagging, wait until the grass is dry for best results.

Q: Does this mower have a blade stop or safety switch?
A: Yes. The mower requires you to hold a bail bar against the handle to keep the blades spinning. If you release it, the blades stop within three seconds. There’s also a key that must be inserted before the mower will start, preventing accidental use by children.