Greenworks LM2504S 25-inch 40V self-propelled mower kit review

Greenworks’ LM2504S is a 40V 25-inch self-propelled walk mower sold as a two-battery kit. The exact U.S. product page identifies SKU 2543802 and internal model MO40L515; it lists two 4.0Ah packs, a dual-port charger, a collection bag and the mower. The page says the kit works within the Greenworks 40V family, but it also warns that an 8Ah 40V pack will not let the battery cover close. Check the fit of any pack you already own rather than reading platform compatibility as a promise that every pack fits this bay.

A wide deck that still needs room

The 25-inch deck covers more width per pass than the brand’s 21-inch walk-behind options, but this remains a walk mower rather than a rider. That extra width is useful only where the deck can turn and pass through your route. Measure gates, corners and shed openings around the full machine; the deck measurement does not describe the handle or wheels. Folding handles can help with vertical storage, but do not eliminate the clearance requirement.

This package is self-propelled, with the blade and travel drive operating separately. The manual describes start handles, drive levers and a speed control; it gives a 1.9-to-4.9-feet-per-second self-propel range. You can leave the drive disengaged and guide the mower yourself when that is easier. Its battery compartment automatically switches to the second pack when the first cannot operate, so the paired batteries act as a longer work supply rather than a single combined amp-hour number.

Bagging, mulch and Turbo leaf pickup

The manual’s technical table calls the machine a 2-in-1 mower for mulching and rear bagging. Greenworks’ exact product page also calls it 3-in-1, describing mulching, rear collection and “turbo” leaf pickup. The manual explains an extra high-lift blade set and a mulch plug, but it does not establish a side-discharge route. Read the leaf-pickup wording as a collection capability using the bag and higher-lift blade arrangement, not as a third outlet or a vacuum attachment. If you specifically need side discharge, the exact documentation here does not support that requirement.

There is a useful documentation conflict to check before purchase. The same product page’s feature copy describes five height positions from 1¼ to 3⅜ inches, while its later specification table says seven positions and the linked MO40L515 manual lists seven settings from 1⅜ to 4 inches. The manual and table agree, so that is the specification used here; confirm the supplied manual and exact model code if a particular cut height is essential. The page’s weight table says 76 pounds, while the manual says 70.6 pounds without the battery pack. The weight basis for the page figure is not stated, so do not treat either as a fully assembled carrying weight without clarification.

What the package claims—and what it cannot promise

Greenworks lists up to 45 minutes of runtime with the included batteries, up to one-half acre, and 120 minutes per battery to recharge using the included charger. These are manufacturer claims, not measured results on your lawn. Wet grass, tall growth, repeated bagging, terrain and the speed you choose can all change the work completed. Greenworks and the manual advise against mowing wet grass; its safety guidance also says not to mow slopes steeper than 15 degrees and to mow across a slope, not up and down. A faster-looking deck does not remove those operating limits.

Each included pack is 4Ah, and the dual-port charger is part of the kit. The mower’s 40V tool platform is separate from Greenworks 60V packs. The manual identifies the 40V battery and charger families, but the exact page does not provide charger wattage; no watt figure is assumed here. The manual also documents an included high-lift blade set, useful when you want a different collection setup. Its limited product and battery warranties are three years under the manufacturer’s terms.

How it compares with the 60V 25-inch kit

The Greenworks LM2516S is the direct alternative if you want this same broad walk-behind format on 60V. It also comes with two 4Ah packs and a dual-port charger, but Greenworks advertises up to 60 minutes and a four-year warranty for that configuration. Its product page contradicts itself on the maximum acreage claim, so neither kit should be selected from acreage numbers alone. The LM2504S is the sensible match when your tools are already 40V, the one-half-acre maximum is appropriate as a planning ceiling, and the exact two-pack kit is what you need. A narrower 21-inch mower is worth comparing if access is the deciding constraint.

This is not a fit for someone who wants a push-only mower, a side-discharge mode confirmed by the manual, known mower-only transport weight, or a battery package above the included two 4Ah packs. Its 25-inch width, two clipping arrangements and powered drive are the meaningful decision points—not claims of gas-like results. Inspect the exact carton list and manual, make a dry-weather mowing plan, and compare the full handle/deck dimensions to your storage route before buying.

Manufacturer references: Greenworks LM2504S SKU 2543802 / MO40L515 page, its linked 40V 25-inch operator manual, and Greenworks’ recall register checked for the exact codes on 2026-10-24.