PowerSmart 40V 21" Cordless Electric Lawn Mower, Mulching & Bagging, Brushless Motor, 6-Position Height Adjustment, Foldable for Storage, 2x4.0Ah Batteries & Charger Included for Garden, Patio, Yard Review

Overview

The PowerSmart 40V 21" Cordless Electric Lawn Mower is a budget-friendly, battery-powered push mower designed for homeowners with small to mid-sized lawns—typically up to 1/3 acre. It comes with two 4.0Ah batteries and a charger, so you’re ready to mow right out of the box. With a brushless motor, 6-position height adjustment, and mulching or bagging capabilities, it aims to deliver gas-like performance without the fumes or pull cords. At $299, it’s squarely in the value cordless category, but the mixed 3.5-star rating suggests it’s not a one-size-fits-all solution.

Who Should Buy This

• Homeowners with 1/4 acre or smaller lawns – The two-battery setup gives you roughly 45–60 minutes of runtime, which is enough for a compact yard. If your lot is bigger, you’ll likely need a third battery or a corded backup.
• First-time cordless mower buyers on a budget – If you’re switching from gas but don’t want to drop $500+ on a premium brand like EGO or Toro, this PowerSmart is an affordable entry point to battery mowing.
• DIYers who want a lightweight, easy-to-store mower – At around 40 pounds and with a foldable handle, this mower is easy to lift, hang, or stash in a shed corner. Perfect if you hate wrestling heavy equipment.
• Homeowners who don’t mind a few quirks for a lower price – If you’re willing to trade premium build quality for cost savings—and can live with occasional bagging clogs or a finicky battery latch—this mower fits the bill.

Key Features Breakdown

• 40V Brushless Motor – Brushless motors are more efficient and last longer than brushed ones. This one spins the 21" blade with enough torque for typical grass, but it can struggle in thick, wet, or overgrown lawns. It’s quieter than gas but not whisper-quiet.
• 21" Cutting Deck – A standard size for residential mowers. It’s wide enough to make reasonable progress on a 1/4-acre yard, but not as fast as a 22" or self-propelled model. You’ll cover about 10–15% less per pass than a larger deck.
• 6-Position Height Adjustment – Range is roughly 1.5" to 3.75". A single lever adjusts all four wheels at once, which is convenient. The lowest setting is fine for Bermuda or Zoysia, but taller grass may require a second pass.
• Mulching & Bagging – The included mulching plug and rear bag let you switch between feeding the lawn or collecting clippings. Mulching works well in dry, short grass, but the bag tends to fill quickly and clogs if the grass is damp. The bag is also small (about 12 gallons), so expect frequent stops on larger lawns.
• Foldable Design – The handle folds down without tools, making storage compact. This is a genuine plus for anyone with limited garage space.
• 2x 4.0Ah Batteries & Charger – You get two batteries, so you can swap when one dies. Each 4.0Ah battery gives roughly 20–30 minutes of runtime depending on grass conditions. Charging time is about 2–3 hours per battery.

Pros

1. Great value for the price – At $299 with two batteries, it undercuts most competitors. You’re getting a brushless motor and a 21" deck for less than a single-battery EGO.
2. Lightweight and easy to maneuver – At ~40 lbs, it’s one of the lighter cordless mowers. Pushing it around small yards, gardens, and patios is effortless.
3. Quiet operation – At about 75 dB, it’s noticeably quieter than a gas mower. You can mow early on weekends without waking the neighbors.
4. Tool-free height adjustment – The single-lever system is fast and intuitive. No bending over to adjust each wheel individually.
5. Folds flat for storage – The handle folds completely, so it stands upright or hangs on a wall. Takes up minimal space.
6. No gas, no oil, no pull cords – Instant start with a button. Great for anyone tired of small engine maintenance.

Cons

1. Bagging performance is mediocre – The rear bag is small and prone to clogging, especially in slightly damp grass. You’ll be emptying it frequently, and clippings may get stuck in the chute.
2. Runtime is short for larger lawns – Even with two 4.0Ah batteries, you’ll struggle to finish more than 1/3 acre without a recharge. The batteries also take 2–3 hours to fully charge.
3. Build quality feels budget-oriented – The plastic deck and handle have a bit of flex. It’s not flimsy, but it doesn’t inspire the same confidence as a Toro or Honda. Some users report the battery latch loosens over time.
4. Struggles with thick or tall grass – The brushless motor is decent, but it bogs down in heavy growth. You’ll need to mow frequently (every 5–7 days) and avoid letting the lawn get over 5 inches tall.

Bottom Line

The PowerSmart 40V 21" Cordless Electric Lawn Mower is a solid entry-level option for homeowners with small, well-maintained lawns who want to ditch gas without breaking the bank. It’s lightweight, quiet, and easy to store—real wins for casual mowers. But the small bag, short runtime, and occasional power limitations mean it’s not the best choice for larger yards, thick grass, or anyone who wants premium build quality. If your lawn is under 1/4 acre and you’re okay with a few trade-offs, this mower is a good value. For bigger or more demanding lawns, save up for a higher-tier model from EGO or Toro.

Frequently Asked Questions

Q: How long do the batteries actually last?
A: In practice, each 4.0Ah battery runs about 20–30 minutes on a standard lawn with the mulching plug in. If you’re bagging or cutting tall grass, expect closer to 20 minutes per battery. Two batteries give you roughly 40–60 minutes of total runtime, but that’s not enough for lawns over 1/3 acre.

Q: Can I use the mower without the bag, and does it mulch well?
A: Yes, you can remove the bag and insert the included mulching plug. It mulches adequately for dry, short grass—leaves fine clippings that decompose quickly. But in damp or long grass, it may leave clumps. For best results, mow frequently and keep the blade sharp.

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