Product Review: 40V HP BRUSHLESS WHISPER SERIES SELF-PROPELLED 21" LAWN MOWER
Introduction
If you’re looking to buy whisper series lawn mower technology that combines power, quiet operation, and cordless convenience, the 40V HP BRUSHLESS WHISPER SERIES SELF-PROPELLED 21" LAWN MOWER is worth a close look. This 40V brushless lawn mower promises high-torque cutting, long run times, and the low-noise performance many homeowners want. In this review I’ll cover what it does best, who should purchase it, and why it’s a strong contender when you search for a 40V HP lawn mower or a reliable self-propelled lawn mower for medium-sized yards.
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What is this product?
The 40V HP Brushless Whisper Series mower is a cordless lawn mower 40V kit that includes dual 40V 6Ah batteries and a rapid charger. Designed for yards up to about 3/4 acre, this 21-inch lawn mower uses a high-efficiency brushless motor to deliver gas-like power without emissions or the fuss of fuel. It’s a versatile electric push mower 21-inch option that can bag, mulch, or side-discharge clippings.
Key Features
- 40V HP Technology — Provides up to 70 minutes of runtime with included batteries.
- WHISPER SERIES — Engineered for low noise; one of the quietest models in the brand’s lineup.
- Push Button Start — Hassle-free starting, no pull cords.
- Kit Contents — (1) RY401012 mower, (2) OP40604 40V 6Ah batteries, (1) OP406A rapid charger.
- All-Wheel Drive & SMART TREK — Matches mower speed to your walking pace for smoother operation.
- CROSS CUT Multi Blade System — Option for 2 blades for a superior cut or 1 blade for longer runtime.
- 21" Lightweight Deck — Corrosion-resistant with a limited lifetime warranty and 7-position height adjustment (1"–4").
- On-board Fuel Gauge — Easy battery life checks.
Why these features matter
The combination of a brushless motor and dual batteries makes this a true battery powered lawn mower for those who want sustained power without the noise and maintenance of gas units. If your priority is a quiet brushless 21-inch self-propelled cordless lawn mower or a whisper series low noise 40V mower for small yards, this model is engineered with that in mind.
Detailed Description
The product description states: 40V HP Technology Provides Up To 70 Minutes of Runtime. WHISPER SERIES – Our Quietest Range of Products. Over 75 40V Tools – All Work With Any RYOBI 40V Battery. The RYOBI 40V HP Brushless 21" Whisper Series All Wheel Drive Multi Blade Lawn Mower delivers the power of gas with cordless convenience. The premium HP brushless motor provides more power, longer runtime, & a longer motor life. This mower features all-wheel drive & SMART TREK technology to match the mower’s speed to your own pace. It starts with a push of a button & is ideal for yards up to 3/4 acre.
With dual active battery ports & two 40V 6Ah batteries, you can achieve up to 70 minutes of runtime. RYOBI’s CROSS CUT Multi blade System offers two blades for superior cutting performance or one blade for increased runtime. The integrated mulch plug allows switching from bagging to mulching with a simple lever. The deck’s aluminum construction resists corrosion and is backed by a limited lifetime warranty. Other practical touches include an on-board battery gauge, 11" high wheels for improved maneuverability, and ONE-Touch aluminum handles that fold for compact storage. The kit includes a rapid charger that replenishes batteries up to 4X faster than a standard charger. The mower is made in the USA with global materials and backed by a 5-Year Tool Warranty.
Pros and Cons
Pros
- Quiet operation: Whisper Series reduces noise for early-morning or suburban use.
- Strong runtime: Up to 70 minutes with included batteries for larger lawns.
- Low maintenance: No oil changes, spark plugs, or gas storage.
- Versatile cutting: Mulch, bag, or side discharge with CROSS CUT blades.
- Easy start: Push-button ignition and SMART TREK self-propelled drive system.
Cons
- Weight: Dual batteries and AWD add weight vs. a simple push mower, though it’s still easier than a gas counterpart.
- Price: A complete battery kit raises initial cost compared with bare-platform mowers—look for deals if you want the best price 40V lawn mower.
- Charging time: Even with a rapid charger, you must plan charging cycles for very large properties.
Who Should Buy This Product
This mower is ideal if you want a high-power, low-noise alternative to gas. It’s perfect for homeowners who want to purchase a 40V self-propelled mower for sale with batteries included, or those searching for a lightweight 21 inch self propelled electric mower with long run time. If you need a high torque brushless motor 40V lawn mower for hilly lawns and prefer maintenance-free operation, this model is a great fit.
Comparison with Similar Products
Compared to other popular cordless mowers, the RYOBI 40V HP mower stands out for its Whisper Series noise reduction and included dual 6Ah batteries. Competitors like other 40V or 60V platforms may offer similar run times, but the combination of all-wheel drive, SMART TREK, and the CROSS CUT blade system make this one of the better choices when looking for a 21-inch cordless mower price that includes quality accessories and a fast charger. If you want a durable 40V battery powered mower with steel deck you might prioritize deck material differently, but the aluminum 21" deck here resists corrosion and reduces weight.
Frequently Asked Questions
How long does the battery last?
With two 40V 6Ah batteries, you can expect up to 70 minutes under typical conditions. Run time varies with grass type, blade choice, and terrain.
Is this mower good for hilly yards?
Yes — the high torque brushless motor, AWD, and SMART TREK drive help navigate slopes better than many single-wheel drive electric mowers.
Does it include the battery and charger?
Yes. The kit includes (2) OP40604 40V 6Ah batteries and an OP406A rapid charger.
Final Verdict
The RYOBI 40V HP BRUSHLESS WHISPER SERIES SELF-PROPELLED 21" LAWN MOWER is a strong recommendation for anyone who wants a quiet, powerful, and maintenance-free mowing experience. It hits the sweet spot for medium-sized yards and homeowners searching to purchase 40V cordless mower options with batteries included. If you’re ready to order a reliable 40V mower with battery included that balances runtime and low noise, this model deserves your consideration.