Best battery lawn mowers of 2026

Every mower on this page cuts grass. What separates them is how much energy they carry, how fast they spend it, and what else runs on the same battery in five years. Those are the three things we can check from published documentation, so those are the three things we rank on.

How we ranked these

We have not pushed any of these mowers. What we have done is read every manufacturer's own spec page, transcribe what they publish, convert the battery specs to watt-hours so they are comparable, and divide by each brand's own runtime claim to get energy spent per minute. Where a manufacturer publishes nothing, this page says so instead of guessing. The full method is on our methodology page.

The comparison nobody else runs

Two results in that table are worth sitting with. The 20-inch Greenworks push mower spends 4.0Wh per minute — less than half what its 80V stablemate spends — because it has no drive motor and a smaller deck. And the 40V Ryobi outlasts every 80V machine except the double-battery Kobalt. Voltage is not doing the work here; watt-hours and deck design are.

Sizing a mower to your lawn

If you do not know how long your lawn takes, work it out from area instead: what size mower do I need has the deck-width and mowing-time tables.

Notes on the picks

Why the EGO is first and the Kobalt is not

The Kobalt carries more energy and is rated for twice the acreage. It is the better mower for a big lawn. It is ranked below the EGO because this page ranks platforms as well as machines, and Kobalt is a single-retailer house brand with a narrower outdoor range. For a mower alone, buy the Kobalt. For a decade of yard tools on one battery, the EGO's 56V line goes further — all the way to a 42-inch zero turn on the same packs.

The Toro is here for one specific reason

Toro is the only manufacturer in this group that publishes an actual watt-hour figure rather than leaving you to multiply marketing voltage by amp-hours. Its 60V Max 6.0Ah pack is published as 324Wh, which works out to 54V nominal — proof that every brand's "max volts" figure is around 10% above the real one. That single published number is the most useful spec on this page, and we unpack what it means here.

The Greenworks LM2108S is last among the 21-inch mowers

Not because it is a bad mower — it publishes more specifications than anything else here and carries a 4-year battery warranty, the longest in the group. It is last because its 33-minute claim from a 320Wh pack is the shortest runtime and the highest per-minute draw on the page, and because Greenworks rates it for half an acre while claiming 33 minutes, two numbers that only reconcile if you buy a second battery.

What we cannot tell you

We have not pushed any of these mowers, so we cannot tell you how the self-propel drive feels on a slope, whether the Toro's Personal Pace system is intuitive, how loud any of them is in practice, or how any of them holds up in year three. Those are real questions and they matter.

Where you need that kind of answer, go to publishers who genuinely bought and ran these machines — TechGearLab and Pro Tool Reviews both run hands-on programs in this category. Sending you there costs us a little traffic and is simply the truth, which is the point.

What we can give you is every published number in one place, converted so it is comparable, with the arithmetic shown. Nobody else in this category is doing that, and it is genuinely the harder half of the decision.