Ryobi RY401150 Review

RY401150 review

What the RY401150 is

The RY401150 is a 21-inch, self-propelled, cordless walk-behind from Ryobi’s 40V HP Brushless line. Ryobi’s support page names it the 40V HP Brushless 21-inch CrossCut Self-Propelled Mower, supplied with two 40V 6Ah batteries and a charger, while its retail kit page calls it the Self-Propelled Multi-Blade Mower Kit. It is the same mower under two names.

Two things matter before any spec talk. Ryobi’s own product page marks this model discontinued, and it is covered by a February 2025 recall notice. Anyone searching for a Ryobi RY401150 review is most likely deciding about a used or leftover unit, so we cover both points below.

Motor, batteries and runtime

Power comes from a brushless motor that Ryobi markets as 40V HP Technology. The kit page claims it delivers more power than a 170cc gas mower, which is a marketing comparison, not a measured figure. Ryobi quotes up to 70 minutes of runtime using the two 6.0Ah batteries together, and recommends the mower for yards up to three quarters of an acre.

No motor wattage or torque figure is published on the pages we read, so treat the gas comparison as a rough pitch.

Cutting and drive

The 21-inch deck uses what Ryobi calls the Cross Cut multi-blade system, described as dual blades. It can mulch, bag or side discharge. Cutting height is a single-point adjustment with seven positions from 1.5 to 4 inches. Ryobi says the system bags 75 percent more efficiently than competing mowers, a claim we cannot check.

Smart Trek adaptive variable speed is the self-propel system, which adjusts to how fast you walk. Ryobi does not publish a top speed. The handles fold with one touch for upright storage, and the bag has a pass-through design for emptying without stopping.

Weight, warranty and the recall

Ryobi lists 75 lb, and a third-party database agrees. Warranty on the support page is 5 years on the tool and 3 years on the batteries.

A recall announced on February 6, 2025 covers the RY401150US, the RY401140US and several other 21-inch Ryobi 40V walk-behinds, because a push-on connector in the powerhead can overheat and create a fire hazard. The remedy is to stop using the mower and request a free replacement. Check the serial number against the notice before using or buying one.

Who might still want it

On paper the RY401150 is a capable mid-size yard mower with real runtime. The discontinued status and the recall make it a poor purchase unless you can confirm it is outside the affected serial range or has been replaced by the remedy.