Is the PowerSmart 80V 21-Inch Push Mower Worth It? One 6.0 Ah Pack Rated for Half an Acre

Who this mower is for

Most cordless push mowers top out at 17 or 20 inches on a 40V pack, which is fine for a small lot and slow on anything bigger. The PowerSmart 80V 21-inch push mower is for the owner of a flat third-to-half-acre lawn who wants a full-width steel deck and a big battery but does not want to pay for self-propel they will not use. It is the kind of mower that replaces a tired 21-inch gas push mower one for one.

This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.

What you get

The kit includes the mower, one 80V 6.0 Ah pack and its charger. PowerSmart puts the pack at 432 watt-hours, rates the runtime at up to 40 minutes and the coverage at up to half an acre, and says the charger refills the pack in about 90 minutes. The motor is brushless, the deck is 21 inches of steel, the start is a push button and the cutting height moves through six positions. The handles fold down for storage. The listing stops there: it does not give the height range, the bag capacity or whether the deck mulches and side discharges, so check the product page for those before you order.

Cutting and power

An 80V brushless motor is the top voltage tier in cordless walk-behinds, and on a 21-inch blade it has the headroom to hold speed through thick grass rather than bogging the way a 40V deck can. Owners of PowerSmart 80V mowers describe a cut comparable to a mid-range gas mower in weekly growth and a willingness to take on taller patches with the deck raised. The steel deck gives the airflow needed to lift grass before the blade and to throw clippings into a bag, which poly-deck mowers struggle with.

Runtime and battery

A 432 watt-hour pack is a large one; it is roughly a third more energy than the common pair of 40V 4.0 Ah packs. PowerSmart’s 40 minutes and half an acre are best-case numbers in dry grass at a tall setting. Tall, wet or dense turf and a low deck pull the figure down, and because there is only one pack in the box, falling short means a 90-minute pause rather than a swap. If your lawn is at the top of the half-acre range, budget for a second pack or plan to mow in two sessions. The pack fits other PowerSmart 80V tools and nothing else.

Build, handling and ergonomics

This is a push mower, and the honest way to think about it is as a 21-inch steel deck with a heavy battery hanging over the rear wheels. PowerSmart does not state the weight, but owners describe it as substantial for a battery machine. On flat ground the big rear wheels and the lack of an engine vibrating through the handle make it pleasant. On a slope you will feel every pound. The push-button start is a real convenience over a pull cord, and the collapsible handle lets it stand on end against a garage wall.

Living with it

There is no oil, no plug, no filter and no stale gas in spring. Keep the blade sharp, since a dull blade costs runtime as well as finish. Scrape the deck after wet cuts. Store the pack indoors over winter at about half charge. The warranty term is not given in the listing, so confirm it on the product page; battery coverage from PowerSmart is typically shorter than tool coverage, and the 6.0 Ah pack is the expensive part of this kit to replace.

Alternatives to Consider

The Greenworks 80V 21-inch push mower is the obvious rival, from a brand with a longer track record and more 80V tools. The EGO Power+ 21-inch push mower costs more and brings the strongest cordless platform on the market. If the lawn has any real slope, step across to the PowerSmart or Greenworks 80V self-propelled version rather than pushing a steel deck uphill.

Verdict

Buy the PowerSmart 80V 21-inch push mower if your lawn is flat, between a third and half an acre, and you want a full-size deck with a big battery without paying for self-propel. Skip it if you have slopes, if you need a second pack on day one, or if you already own batteries from another brand.