40V Cordless Lawn Mower, 17-Inch Walk Behind Lawnmower with 2 x 20V 4.0Ah Battery, Brushless Motor, 6 Cutting Heights, 50L Grass Bag, for Garden/Patio/Yard/Lawn Review

Overview

The Lawnmower 40V Cordless Walk Behind is a compact, battery-powered mower designed for small to medium-sized lawns (up to roughly 1/4 acre). It runs on two included 20V 4.0Ah batteries wired in series to deliver 40V of power, and it’s aimed at homeowners who want an affordable, lightweight alternative to gas mowers without sacrificing maneuverability. With a 17-inch cutting deck, six height adjustments, and a 50-liter grass bag, this machine is best suited for tidy, flat lawns where precision and ease of storage matter more than raw acreage.

Who Should Buy This

• Homeowners with 1/8 to 1/4 acre lawns – If your yard is under 5,000 square feet, this mower will handle a full cut on one charge (or two if your grass is thick). It’s not built for sprawling properties.
• Anyone tired of gas, oil, and pull-cords – The brushless motor starts instantly with a button, and there’s no fuel to mix or stale gas to drain at season’s end. Perfect for the “plug and play” crowd.
• Apartment or townhouse dwellers with small patches – At under 30 pounds and with a folding handle, this mower stores upright in a closet or on a balcony. It’s ideal for postage-stamp lawns.
• Budget-conscious buyers seeking a reliable starter mower – At $189.99, it undercuts most 40V competitors. If you’re new to battery mowers and don’t want to spend $400+, this is a low-risk entry point.

Key Features Breakdown

• 40V System (2 x 20V 4.0Ah Batteries): The two batteries run in series for 40V power, which is enough for a 17-inch blade. The 4.0Ah capacity gives you about 30–40 minutes of runtime on a full charge—enough for most small lawns. Note: You can’t swap batteries independently; both must be charged together.
• 17-Inch Cutting Deck: This is a narrow deck, which means fewer passes per row but better maneuverability around flower beds, trees, and tight corners. It’s a trade-off: faster cutting on small lawns, slower on open spaces.
• Brushless Motor: Brushless motors are more efficient, quieter, and last longer than brushed ones. You’ll get better runtime and less heat buildup, which matters if you’re mowing in summer heat.
• 6 Cutting Heights (1.2 to 3.5 inches): The lever adjusts all four wheels simultaneously—no crawling under the deck. The range covers everything from a tight 1.2-inch “golf green” cut to a 3.5-inch “tall and healthy” setting. Good for most grass types, but the lowest setting may scalp uneven ground.
• 50L Grass Bag: That’s about 13 gallons—decent for a 17-inch mower. It’s a fabric bag with a plastic frame, so it’s lightweight but can clog in damp grass. The bag has a handle and empties easily, but it’s not huge; expect to empty it every 2–3 passes on a typical lawn.
• Walk-Behind Design: No self-propel here. This is a push mower, so it’s best on flat terrain. If your yard has hills, you’ll be doing the work.

Pros

1. Instant start, zero fuss – Press a button, squeeze the safety bail, and go. No priming, no choking, no fumes.
2. Lightweight and easy to store – Under 30 pounds with batteries, and the handle folds flat. It hangs on a wall hook or slides under a workbench.
3. Quiet operation – At around 75 decibels, you can mow early Saturday morning without waking the neighbors or needing earplugs.
4. Good value for the price – You get two 4.0Ah batteries and a charger included. Comparable mowers from big brands often cost $50–100 more.
5. Simple height adjustment – The single-lever system works smoothly and locks into six positions. No crawling or tools required.
6. Low maintenance – No oil changes, spark plugs, or air filters. Just charge the batteries and sharpen the blade annually.

Cons

1. No self-propel – This is a pure push mower. On slopes or thick St. Augustine grass, you’ll tire quickly. If your yard has any incline, consider a self-propelled model.
2. Runtime is tight for thicker lawns – In tall, damp, or dense grass, you’ll get closer to 20–25 minutes per charge. Plan to mow in sections or buy extra batteries.
3. 17-inch deck is narrow – You’ll make more passes than with a 20- or 21-inch mower. For a 5,000 sq ft lawn, expect 40–50 minutes of walking.
4. Grass bag can clog in wet grass – The fabric bag and small chute don’t handle moisture well. Mow when the grass is dry, or you’ll be stopping to unclog the chute.

Bottom Line

The Lawnmower 40V Cordless is a solid, no-nonsense mower for anyone with a small, flat lawn who prioritizes convenience and low cost over raw cutting speed. It won’t win any races against a gas mower, and it’s not built for hills or heavy-duty work, but for its price point, it delivers reliable, quiet, and clean performance. The included batteries are a genuine value, and the brushless motor means it’ll last several seasons with minimal care. If your lawn is under 1/4 acre and you want to ditch gas forever, this is a smart buy. Just keep your expectations in check regarding runtime and bagging wet grass.

Frequently Asked Questions

Q: Can I use the mower while the batteries are charging?
No. The mower requires both batteries inserted to operate. You cannot run it off a cord or charge one battery while using the other. You’ll need to fully charge both batteries (about 2–3 hours) before each use.

Q: How long do the batteries last in real-world use?
On a typical flat lawn with dry grass at a medium height setting, expect 30–40 minutes of continuous runtime. In thick, tall, or damp grass, that drops to 20–25 minutes. The 4.0Ah batteries are decent, but not the largest available.

Q: Does the mower mulch or side-discharge?
This model comes with a rear grass bag only. It does not include a mulching plug or side-discharge chute. If you want to mulch, you’ll need to buy an optional mulching plug separately. The mower is designed primarily for bagging.