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 reviewerLawn & Garden
RYOBI 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower
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
7.6 / 10
Decent
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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
✅ 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
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 reviewerBogs 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: RedditCustomer 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 reviewerClearPick 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.
