Greenworks Optimow 25 Low Cut robotic mower, SKU 2529902 review

This assessment is for the U.S. Greenworks Optimow 25 Low Cut robotic mower, SKU 2529902, model LMG402. It is a small-path, battery-powered robot that follows a buried or pinned perimeter wire, cuts on a schedule, and returns to its dock. It is not the higher-cut Optimow 25H, nor is it a wire-free AiMowbot C-series unit. Greenworks' U.S. page and linked Optimow family manual were checked; this is not a hands-on test.

Size the lawn using the working-area figure

Greenworks presents the Optimow 25 for a half-acre lot, but the exact page's specification table gives a 0.25-acre maximum working area and recommends 0 to 0.2 acre. Those figures describe different things: a lot can be half an acre while the grass being maintained is a quarter acre or less. For a hard fit, the more useful upper threshold is the stated quarter-acre mowing area, and the maker's lower recommended range leaves operating margin. Neither figure promises a particular lawn result. The shared operator manual says the 25's mowing time averages about 150 minutes, with charging around 270 minutes; grass length and moisture, slope, layout, and interruptions affect actual work. Plan routine repeat cuts rather than expecting one battery cycle to finish a lawn that has grown tall.

Perimeter-wire installation is the main setup job

This model needs a physical boundary wire and a charging station. The listed package includes 300 feet of boundary wire and 200 staples; Greenworks' manual permits a longer overall loop, up to 2,600 feet, but that is a system limit, not wire included in this carton. The operator has to lay out and secure the boundary and guide wire, define islands and restricted areas, and keep the station's approach clear. The manual calls for a level station, about 10 feet of open space in front and 3 feet at the sides, with the power lead reaching an outlet. Measure narrow passages before buying: the product guidance specifies a 24-inch minimum passage.

Greenworks lists a 35-percent maximum mowing-area slope, while the manual separately limits the boundary-wire slope to 15 percent. That difference matters when a lawn's steepest ground also carries the wire. These are maker limits, not a promise of traction on wet or unstable grass. The manual's safety and care instructions still apply: remove debris, inspect the mower and blades, keep people and pets away during operation, and don't treat obstacle sensing as supervision.

A low cut and narrow path suit steady maintenance

The 25 cuts an 8.7-inch path with three pivoted blades and adjusts from 0.8 to 2.4 inches. Its narrow width means it works by returning to the same mapped area repeatedly, not by clearing a broad strip in a few passes. The low setting is the defining difference from the 25H high-cut configuration. The Optimow does not provide a conventional grass bag or a documented side-discharge setup; its use is to clip repeatedly in place. If collecting clippings, making a fast first cut through overgrown grass, or choosing between several discharge modes is essential, choose a conventional mower instead.

App and cellular service are part of ownership

Greenworks identifies app scheduling and a built-in 4G connection with GPS tracking. The exact page says a prepaid two-year subscription begins at purchase. Its FAQ says the mower retains saved settings and can continue operating if service is not renewed, while GPS tracking and software updates are no longer available. Renewal terms and future app support should be checked with Greenworks; do not assume those features are permanently included. This is a poor choice for someone who does not want to install an app, plan a wire route, or maintain a fixed dock location.

What changes versus the Optimow 50

The 50 is the closer comparison when the mapped lawn exceeds the 25's quarter-acre working-area figure. It is rated for a half-acre mowing area and its package page lists 1,000 feet of wire and 400 staples, versus the 25's 300 feet and 200. Both use a 24-volt, 4Ah battery, share the 8.7-inch low-cut format, and list about 150 minutes of cutting; the 50's manual charging figure is much shorter. The exact Optimow pages link the same 88-page manual family, which lists a two-year guarantee by GlobGRO AB, while the current U.S. product page states a four-year limited tool warranty. Those terms conflict; check the actual U.S. SKU warranty and battery coverage before purchase rather than assuming the manual's term is the U.S. warranty.

The Greenworks product-page image registered here is the same manufacturer rendering linked by the 25 and 50 pages. It shows a mower body, not the wire, dock, or package contents, and is not independent test photography. Compare this low-cut 25 with the Optimow 50 only after measuring mowable grass and likely wire layout; choose the 50 for more rated working area, or a wire-free C-series model if avoiding perimeter-wire installation is more important. A walk-behind mower is the more direct alternative when broad cutting, bagging, or human control of every pass is needed.

Manufacturer references: Optimow 25 product page and Optimow 25/50 operator manual (PDF).