Lawn & Garden

RYOBI 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower

Name: RYOBI 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower
Rating: 8.5 (1 reviews)

Best Mid-Range Cordless Mower

The RYOBI 40V HP Brushless 21" Self-Propelled Mower bridges budget and premium battery mowers — 21" deck, variable-speed self-propel, and full 40V ecosystem compatibility. Available on Amazon.ca (ASIN B09FN5K1S6) at around $699 CAD.

ClearPick Score

8.5 / 10

Very Good

Cutting Power

8.5

Self-Propel

8.5

Battery Ecosystem

9.0

Build Quality

8.0

Value

8.5

Full Specs

Voltage	40V HP
Cutting Width	21" steel deck
Drive	Self-propelled, variable speed
Cutting Heights	7 positions
Discharge	3-in-1 — bag, mulch, side discharge
Motor	HP Brushless
Battery	6Ah recommended (check listing for kit vs tool-only)
Runtime	~40–50 min per charge
Ecosystem	RYOBI 40V (incompatible with RYOBI 18V ONE+)
Weight	~70 lb with battery

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🏆 Best Mid-Range Cordless Mower

RYOBI 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower

~$699 CAD est. on Amazon.ca

View on Amazon.ca → Opens Amazon.ca · Affiliate link

✅ Ships to Canada

✅ Prime eligible (most orders)

✅ 30-day Amazon returns

✅ No extra cost to you

📖 See our guideBest Lawn Mowers in Canada: Gas, Electric, and Robot — Ranked by Real Owners (2025)

✅ What Works

Compatible with the broad RYOBI 40V battery ecosystem — the same batteries work across RYOBI 40V trimmers, blowers, hedge trimmers, and snow blowers. Existing RYOBI 40V users get immediate tool compatibility.
The HP Brushless motor runs noticeably cooler and more efficiently than standard brushed motors, translating to longer runtime per charge and longer motor lifespan over years of use.
21" deck covers typical Canadian residential lots (3,000–5,000 sq ft) without the extra-passes frustration of 17" budget mowers. Variable-speed self-propel adjusts to your walking pace on both flat and gently sloped terrain.
Quieter than any gas mower — a genuine quality-of-life difference for early morning mowing in Canadian suburbs where noise bylaws are common.

⚠️ Worth Knowing

RYOBI sells two incompatible battery systems: 40V and 18V ONE+. They share no batteries. Many buyers with RYOBI 18V tools assume compatibility — it does not exist. Confirm 40V before buying.
Battery inclusion varies by listing — tool-only listings are common. Confirm the kit version; 40V 6Ah batteries cost $100–$130 CAD separately.
The 40V platform delivers slightly less power than EGO's 56V for very thick, overgrown, or wet grass. Weekly cutting keeps it within comfortable range; occasional users may struggle after missed weeks.
Customer service reports are mixed — warranty issues have been resolved slowly for some Canadian buyers. Keep purchase receipts.

What Real Buyers Are Saying

What buyers love

"Already had two RYOBI 40V batteries from my chainsaw — the mower was a natural add-on. No new chargers or batteries needed."
Source: Amazon reviewer

"Self-propel handled my front yard incline without any struggle. I barely needed to push."
Source: Amazon reviewer

"Cuts clean on the first pass on my weekly schedule. Hasn't bogged once in a whole summer."
Source: Reddit

"Quieter than gas — I actually enjoy mowing now. Sounds like a vacuum cleaner, not a lawnmower."
Source: Amazon reviewer

Common complaints

Bought it not knowing 40V and…

Bought it not knowing 40V and 18V batteries are totally different. I have a pile of 18V batteries from my RYOBI drill set and none of them work in this mower.

Source: Amazon reviewer

Listing said battery included but…

Listing said battery included but mine arrived tool-only. Had to sort it out with customer service which took two weeks.

Source: Amazon reviewer

Bogs in thick wet grass after…

Bogs in thick wet grass after a couple of missed weeks. Had to make two passes to get it clean. EGO handles it better but costs more.

Source: Reddit

Customer service was slow to respond…

Customer service was slow to respond when my self-propel cable frayed. Took a month to get a replacement part.

Source: Amazon reviewer

ClearPick Verdict

The RYOBI 40V HP Brushless 21" sits between the budget Greenworks and the premium EGO — broader ecosystem than Greenworks, more affordable than EGO, and more cutting power than entry-level options. The RYOBI 40V/18V battery confusion is a recurring real problem worth knowing going in. For buyers already in the RYOBI 40V ecosystem or looking for a solid mid-range self-propelled mower, it earns its place. For buyers starting fresh, the EGO's 56V ecosystem and superior thick-grass performance justify the ~$150 premium.

RYOBI 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower

✅ What Works

⚠️ Worth Knowing

What Real Buyers Are Saying

What buyers love

Common complaints

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