Westinghouse
Westinghouse 40V 18-Inch Brushless Cordless Lawn Mower: Complete Battery System
The Westinghouse 40V 18-inch Brushless Cordless Lawn Mower delivers consistent brushless motor performance and zero-emissions mowing in a lightweight 36-pound package , making it one of the more accessible battery-powered push mowers on the market. It ships with two 4.0Ah lithium-ion batteries and a charger, giving you back-to-back runtime without buying extra accessories.
It's best suited for small to medium yards where its 25-minute per-battery runtime is enough to get the job done without interruption.
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Last updated: . Based on our analysis of 364 lawn mowers.
What Sets It Apart
Key specification highlights based on our analysis.
Considerations
25-Minute Runtime
Below-average runtime (database avg: 52.7 min)
Why We Recommend It
- 01.
Dual 4.0Ah lithium-ion batteries included , swap and keep mowing without waiting for a recharge
- 02.
Brushless motor provides efficient power delivery, reduced heat buildup, and longer overall motor life
- 03.
Lightweight 36 lb design makes it noticeably easier to push and maneuver than most gas push mowers
- 04.
6 cutting height positions (1-3 inch range) let you dial in the right cut for healthy grass across seasons
- 05.
Zero direct emissions and quieter operation than gas , ideal for early morning mowing in residential neighborhoods
Considerations
- 01.
25-minute runtime per battery is below average (database avg: 52.7 min) , may require a mid-job battery swap on yards larger than ~2,000 sq ft
- 02.
18-inch cutting deck is compact, meaning more passes are needed compared to 20-22 inch decks on larger yards
- 03.
Push-only design with no self-propelled option means more physical effort on long mowing sessions or uneven ground
Technical Specifications
| Feature | Specification |
|---|---|
| Mower Type | Push |
| Power Source | Battery |
| Cutting Width | 18" |
| Cutting Height | 1" – 3" |
| Height Positions | 6 |
| Battery | 40V 4Ah |
| Runtime | 25 min |
| Weight | 36 lbs |
| Warranty | 2 years |
Power & Performance
The 40V brushless motor is the core of this mower's performance advantage , brushless technology reduces friction and heat compared to conventional brushed motors, translating to more consistent RPM under load and longer motor lifespan over time. For standard residential grass types like fescue, bluegrass, or Bermuda kept at regular heights, the motor delivers sufficient power to maintain a clean, even cut.
It's not engineered for heavily overgrown or wet grass, where a higher-voltage platform would be more appropriate.
Cutting System
The 18-inch steel cutting deck covers a narrower swath than the 20-22 inch decks common on mid-range mowers, which means more passes to complete the same area , but also a more nimble footprint for navigating tight spaces, garden beds, and obstacles. Cutting height adjusts across 6 positions from 1 to 3 inches, giving you control to follow seasonal mowing guidelines for healthy grass.
Discharge options should be confirmed with the product listing, but most mowers in this class support rear bag and mulch functions.
Drive & Handling
At 36 pounds, this is one of the lighter mowers in its class, and customers specifically call out how easy it is to maneuver , a meaningful advantage for users who find heavier gas mowers tiring over a full mowing session. The push design means you supply the forward motion, which works well on flat to gently rolling terrain but becomes more effort on steeper slopes.
Handle ergonomics are standard for the category, and the lightweight build reduces end-of-session fatigue noticeably.
Battery / Fuel
Two 40V 4.0Ah lithium-ion batteries are included, each delivering approximately 25 minutes of runtime , for a combined potential of around 50 minutes if you swap mid-job. While 25 minutes per battery is below the category average of 52.7 minutes, the dual-battery inclusion partially offsets this limitation.
Charging time and compatibility with other Westinghouse 40V tools should be verified if you plan to expand the platform. No fuel, oil, or engine maintenance is required , a significant reduction in upkeep hassle compared to gas-powered alternatives.
Who Is This Mower For?
Ideal For
- ✓ Homeowners with small yards (under 2,500 sq ft) , the 18-inch deck and 25-min runtime per battery are well-matched to compact suburban lawns
- ✓ Eco-conscious users wanting zero emissions and quieter mowing , brushless motor technology keeps noise and environmental impact low
- ✓ Low-maintenance seekers , no oil changes, spark plugs, fuel mixing, or pull-cord hassle; just charge and mow
- ✓ practical buyers who want a dual-battery kit included , both 4.0Ah batteries and charger come in the box with no upcharging
Not Ideal For
- ✕ Large yard owners (over 4,000 sq ft) , even with two batteries, the combined ~50-minute runtime may not cover the full area in one session
- ✕ Homeowners with hilly or sloped terrain , the push-only design and 36 lb weight can become tiring without self-propelled assist on inclines
- ✕ Users with thick, overgrown, or dense grass , the 18-inch deck and 40V platform may struggle with heavy cutting loads compared to higher-voltage or gas alternatives
Customers consistently describe assembly as incredibly easy and straightforward, with most reporting a quick out-of-box setup experience requiring minimal tools. The push-button start eliminates the pull-cord hassle associated with gas mowers, so first use is simple even for first-time electric mower owners.
Charge both lithium-ion batteries fully before your first mow to establish good battery conditioning habits
Set your cutting height one position higher than your target on the first pass over longer grass to avoid bogging down the motor
The Westinghouse 40V Cordless Mower comes with a 2-year limited warranty covering defects in materials and workmanship, plus lifetime technical support , an above-average support offering that adds long-term confidence to the purchase. Always register your product with Westinghouse after purchase to ensure warranty coverage is active.
FAQ
How long does the battery last on the Westinghouse 40V 18-inch lawn mower?
Each 4.0Ah lithium-ion battery provides approximately 25 minutes of runtime, which is enough for yards up to roughly 2,000-2,500 square feet per charge. Since two batteries are included, you can swap mid-job for up to ~50 minutes of combined mowing time , enough to handle most small suburban yards in a single session.
Is the Westinghouse cordless mower self-propelled?
No , this is a push mower, meaning you provide the forward motion manually. The lightweight 36 lb design keeps the physical effort manageable on flat terrain, but if you have significant slopes or a larger yard, a self-propelled model would reduce fatigue.
Does the Westinghouse 40V mower include batteries and a charger?
Yes , two 40V 4.0Ah lithium-ion batteries and a charger are included in the box. This is a notable value advantage over many competing cordless mowers that sell batteries separately, often adding - to the effective investment.
What size yard can this mower handle?
The 18-inch deck and 25-minute per-battery runtime make this mower best suited for yards up to about 2,500 square feet per battery. With both batteries, you can cover up to approximately 5,000 square feet, though this varies depending on grass thickness, terrain, and mowing speed.
How does the brushless motor compare to standard motors on cordless mowers?
Brushless motors run more efficiently than brushed motors , they generate less heat, experience less mechanical wear, and maintain more consistent RPM as the battery drains. In practice, this means more reliable cutting speed throughout the charge cycle and a longer overall motor lifespan, reducing the chance of performance degradation over time.
Is the Westinghouse 40V mower good for thick or overgrown grass?
It handles standard maintained grass well, as confirmed by customer feedback noting consistent brushless motor performance. However, for heavily overgrown or dense grass, the 40V platform and 18-inch deck may struggle to maintain optimal RPM , in those cases, a higher-voltage (60V+) or gas-powered mower with a larger deck would be a more appropriate choice.
Bottom Line
The Westinghouse 40V 18-inch Brushless Cordless Mower is a well-positioned, low-hassle option for small yard owners who want to eliminate gas maintenance while keeping things practical for a dual-battery kit. The brushless motor, lightweight build, and included 2×4.0Ah lithium-ion batteries make it a complete, ready-to-mow package.
Buyers with larger yards or hilly terrain should look at a self-propelled or higher-runtime alternative.
Best for small flat yards under 2,500 sq ft where low-maintenance, zero-emissions push mowing is the priority
Consider alternatives if you have a yard over 4,000 sq ft, steep slopes, or frequently deal with thick overgrown grass
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