If your lawn is under 300 sqm, a cordless mower is almost certainly the right tool. Modern brushless motors and 40–80V battery packs cut as well as a small petrol mower for half the noise, none of the fumes, and storage that doesn't reek of two-stroke. The only real questions are runtime, deck size, and whether the battery system slots into the rest of your tool collection.
Our team’s top picks
EGO Power+ 21" Self-Propelled Mower
- 56V battery — closest to petrol performance
- Quiet, brushless motor
- Folds up vertically for storage
- Best self-propelled drive in the category
Greenworks 40V 16" Mower
- Compact 16" deck for tight spaces
- Honest price, light weight
- Battery shares with Greenworks tool line
- Good for under-200 sqm lawns
Milwaukee M18 FUEL 21" Self-Propelled Mower
- M18 platform fits 200+ tools
- Brushless motor and tough deck
- REDLINK overload protection
- Built like contractor gear
Worx Nitro 40V 17" Mower
- Folds completely flat for storage
- Lightweight at under 14 kg
- Two batteries for runtime extension
- Excellent for apartments and townhouses
Ryobi 40V Self-Propelled 20" Mower
- Variable-speed self-propelled drive
- Decent runtime on 6.0Ah pack
- Ryobi platform shares 200+ tools
- Aggressive pricing
What to look for in a cordless lawn mower small yard
- Battery voltage is a rough power proxy. 40V handles most lawns; 80V approaches petrol territory.
- Pick a brand whose batteries you already own — the platform lock-in pays off across blowers, trimmers and saws.
- Brushless motors run cooler, last longer, and pull less battery for the same cut.
- A 16–20" deck is the sweet spot for under-300 sqm lawns. Wider decks waste battery on small turns.
- Self-propelled is overkill for a small flat lawn but worth it on slopes.
Frequently asked questions
How long does a cordless mower battery last?
Most 40V mowers cut 200–300 sqm on a 4–5 Ah battery. With a second battery you'll comfortably mow up to 600 sqm. Hot, long grass eats more battery than cool, even cuts.
Are cordless mowers powerful enough?
For lawns under 500 sqm and grass cut at least every two weeks, yes. If you're mowing waist-high paddock or a 1000+ sqm yard, petrol still wins.
Should I buy into a battery platform?
Almost always. The lock-in is real but so is the value — once you have a 40V mower, the matching trimmer, blower and hedge cutter cost half what they would with separate batteries.
Mulch, bag or side-discharge?
Mulch when grass is dry and short — the clippings feed the lawn. Bag when grass is wet, long, or you want a tidy finish. Side-discharge is a hangover from contractor mowing — most homeowners never use it.
Bottom line
If you only take one thing from this guide, it is that quality matters more than spec on paper. The picks above have been chosen because our team uses them or trusts them — not because they are the most expensive or have the flashiest marketing. Buy once, garden often.
