6 Best Ion Battery Lawn Mowers of 2025

Commanding and confident, the Greenworks 40V 21′ Self-Propelled tackles suburban lawns with a durable 21-inch steel deck and a high-efficiency brushless motor that delivers strong torque without the racket of gas. The rear-wheel-drive self-propelled system adds sure-footed traction on slopes and uneven patches—exactly where push mowers falter. A 7-position single-lever height adjust and 3-in-1 bag/mulch/side-discharge setup solve the biggest frustrations: cut quality, cleanup, and versatility.

In real-world mowing, the included 5.0Ah battery nets up to about 45 minutes depending on grass thickness—enough for many quarter- to half-acre lots when used efficiently. The 21′ deck covers ground quickly, and the brushless motor maintains blade speed well through mixed turf, though extremely tall or wet grass will sap runtime. The vertical storage design is a space-saver in crowded garages, and push-button start makes weekly mowing nearly frictionless.

Against the Greenworks 40V 19′ Push model, this unit adds self-propelled drive, a wider deck, and better traction—trading some weight and cost for speed and ease. Compared with the PowerSmart 80V, it’s quieter and part of a larger 40V ecosystem, but less muscular in thick overgrowth. It’s ideal for homeowners wanting a balanced, maintenance-free mower with terrain-ready drive; for outright power, the PowerSmart wins, but on features-to-convenience ratio, the Greenworks 21′ is stronger.

Punchy and practical, the Greenworks 40V 19′ Push mower delivers brushless motor efficiency and a 19-inch steel deck that feels sturdier than most budget options. It’s built for users who value simple operation and push-button start without dealing with gas, oil, or tune-ups. With up to 30 minutes from the 4.0Ah pack, it solves small-lawn mowing without extension cords or fumes.

In testing, the 19′ deck threads around beds and tight side yards more easily than 21-inch mowers, and the single-lever 7-position height adjust makes quick work of variable grass lengths. Mulching is clean in moderate growth; side discharge helps when the lawn gets ahead of you. Runtime dips in dense, moist turf, so larger yards may require a second battery or segmented sessions.

Compared to the Greenworks 21′ Self-Propelled, this model trades drive assistance for lower weight and a tighter turning radius—great if your yard is flat and cluttered. Versus the 48V (2x24V) 17′ model, it offers a stronger deck and more cutting width, though it’s not as nimble as the 17′. For buyers who want a durable push mower with gas-like performance in compact spaces, it offers a sharper feature-to-size balance than the 21′ model.

Agile and efficient, the Greenworks 48V (2x24V) 17′ push mower shines where maneuverability matters. Its lightweight 17-inch poly deck resists rust and makes curb edges, garden beds, and narrow gates painless to navigate. The dual-battery design provides up to 45 minutes of runtime while syncing with a massive 125+ tool ecosystem—ideal for cord-free yard systems.

On test lawns, the smaller deck trims with precision and avoids scalping over bumps thanks to the 5-position single-lever height adjust. Mulching is tidy on weekly cuts, and rear bagging keeps clippings under control when growth spikes. It’s not built for heavy, knee-high grass; thick patches will slow blade speed and cut into runtime, but for routine maintenance, it feels quick and light.

Compared with the Greenworks 19′ Push, this model is lighter, quieter over hard surfaces, and easier to steer in tight spaces, while the 19′ cuts more per pass and feels more robust. Next to the Greenworks 21′ Self-Propelled, it sacrifices traction and deck width for portability. For small to medium yards with lots of obstacles, the 17′ model delivers better ease-of-use-to-coverage than the larger decks.

Muscular and unapologetic, the PowerSmart 80V 21′ mower brings 80V MAX power that feels closest to gas for thick, fast-growing lawns. The all-steel deck and brushless motor give it a planted, durable feel that chews through dense turf better than most 40V competitors. With a claimed 40-minute runtime from the 6.0Ah pack and 3-in-1 functionality, it’s built for performance-first buyers.

In practice, the 21-inch deck swallows large swaths, while 6-position height adjustment (1.6’–4′) lets you step up for heavy growth or drop down for a crisp finish. Mulching stays strong deeper into tall grass where mid-tier mowers bog down; switching to rear or back discharge helps maintain blade speed. It’s heavier than compact mowers, and pushing uphill can be tiring on larger lots without self-propel.

Versus the Greenworks 21′ Self-Propelled, the PowerSmart delivers more raw cutting power but trades away assisted drive and refined storage features. Compared to the Greenworks 19′ Push, it’s faster over big areas and tougher on thick grass, though less nimble around obstacles. If your priority is power and cut authority, this 80V model outperforms the 40V class while offering comparable deck features.

Featherweight and friendly, the Greenworks 40V 16′ is built for small yards and quick weekly touch-ups. Its ultra-light chassis and 16-inch deck make one-handed turns and tight passes easy, while the Smart Cut single-lever height adjust (1.25’–3.375′) dials in clean results. With up to 45 minutes from a 4.0Ah battery and near-whisper-quiet (<75 dB) operation, it’s an effortless, neighborhood-friendly option.

On short to moderate growth, mulching is uniform and bagging is efficient; when grass gets long, plan a higher first pass to preserve runtime. The mower’s compact footprint stores easily in sheds or closets, and push-button start reduces friction for frequent users. It’s not designed for thick, wet, or overgrown lawns—blade speed and small deck will demand patience in those scenarios.

Against the Greenworks 48V 17′, this model is even lighter and quieter but offers a slightly narrower cut and lower max height range. Compared to the Greenworks 19′ Push, it’s more maneuverable and easier to carry, but less suited to medium yards. For small urban or townhome lawns, its lightweight convenience per square foot edges out the larger Greenworks options.

Surprisingly capable, the Litheli 18′ 40V brings brushless efficiency with a manageable 42.33 lb weight that’s easy to lift over steps and around landscaping. The 18-inch cutting width strikes a sweet spot between nimble steering and decent coverage, and the included two 4.0Ah batteries stretch mowing sessions beyond a single pack. For tidy lawns, the 10.57-gallon bag means fewer stops to empty clippings.

In use, the 6-position height adjust (0.98’–2.95′) favors low-to-medium turf; fans of golf-green cuts will appreciate the low settings, though very tall grass will bog performance. Runtime hovers around 30+ minutes per pack in typical conditions; swapping to the second battery keeps you moving. Note the charger exclusion—you’ll need an existing Litheli charger or to add one separately.

Compared to the Greenworks 19′ Push, the Litheli is lighter and includes two batteries, but its deck and height range skew toward shorter turf. Versus the Greenworks 16′, it covers more per pass yet remains easy to maneuver. For users prioritizing lightweight handling and a generous collection bag in smaller yards, it’s a compelling alternative within the 40V class.