Best Robot Lawn Mowers (Wire-Free)

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Start with your lawn, not your lot. Every maker rates its mowers by mowed area (a quarter acre, an acre), and that figure assumes the robot runs most of the day and returns to charge as often as it needs. Measure the grass you actually want cut, then pick a model rated above it. A mower rated well beyond your lawn finishes sooner; one rated below it falls behind in peak growing season.

Navigation is the real choice, and the old answer, a boundary wire buried around the lawn, is no longer the default. RTK mowers position themselves by satellite, corrected to centimeter accuracy by a reference station: either an antenna you mount in the yard or, where coverage exists, a network service. RTK needs a view of the sky, so it is strongest on open lawns and weakest under heavy tree cover or tight against tall walls, which is why current models fuse it with cameras. LiDAR-and-vision mowers skip satellites entirely and navigate by recognizing the yard around them, so they shrug off trees and walls but need fixed features within sensor range to work from. An open lawn favors RTK; a treed, fenced or built-up yard favors LiDAR.

Then the terrain numbers. Slope ratings are given in percent (rise over run, so 45% is about 24° and 80% is about 39°) and are measured by the maker on dry grass; treat them as a ceiling, not a target. Cutting width sets how fast a mower covers ground, which is why bigger-area models have wider decks or two discs. Check the cutting-height range against how long you keep your grass, and whether it is set from the app or by hand. Battery figures here are in amp-hours (Ah) as the makers publish them; none of these makers lists pack voltage, so a watt-hour figure is not given.

Every pick here recharges itself at its station, which runs from a standard outlet through the supplied power adapter. None of the makers publishes energy per charge, so if you want the number, a plug-in power meter on the station's supply gives you your own kilowatt-hours to multiply by your rate.

How we picked

Rated lawn area, slope rating and cutting width as the maker publishes them
A stated navigation method (RTK, network RTK, LiDAR, vision) and what it needs from your yard
Obstacle detection, lift and tilt safety, and anti-theft alerts
Weather protection rating and rain handling
Warranty terms, including the battery
No wire to bury for any pick on this page

We do not accept payment for placement and we do not publish star ratings we did not measure. Specifications come from each manufacturer's published spec sheet.

Side by side

Product	Type	Best for	Rated area	Navigation	Max slope	Cutting width	Cutting height	Battery	Obstacles	Weather protection	Noise	Weight	Connectivity	Warranty	Edge cut
Dreame A3 AWD 1000	LiDAR + vision, ~1/4 acre	A sloped or tree-shaded quarter-acre yard where you want no wire and no antenna	0.25 acre (1,000 m²)	360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK	80% (38.7°)	7.9 in	1.2–3.9 in, set in the app (0.2 in steps)	5Ah	300+ object types avoided; crosses 2.2 in obstacles; 23.6 in narrow passages	IPX6 (can be hosed down); rain, snow and frost sensing	Under 62.8 dB	16.1 kg (35.5 lb)	Wi-Fi + built-in 4G; 1 year of 4G data included per the listing	3 years	Under 1.9 in from the boundary (EdgeMaster)
Segway Navimow i210 AWD	RTK + vision, ~1/4 acre	An open quarter-acre lawn with good sky view and Network RTK coverage	0.25 acre (16 hours to cover it, per Navimow)	Network RTK + vision (EFLS NRTK); no wire; local antenna only where NRTK is unavailable	45% (24°)	7.1 in (1 disc, 5 blades)	2–3.6 in, manual adjustment	5.1Ah; 120 min mowing per charge, 120 min to recharge	150+ object types (VisionFence, 140° RGB camera); 1.57 in steps	IP66; weather-forecast adaptive	59 dB(A)	27.12 lb	Bluetooth, Wi-Fi, cellular (1 year of Connect+ free, then a paid annual renewal)	3 years device and charging station, 2 years battery	–
Dreame A3 AWD Pro 3500	LiDAR + vision, ~7/8 acre	A half- to seven-eighths-acre lawn with slopes, trees or a complicated layout	0.87 acre (3,500 m²)	360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK	80% (38.7°)	15.8 in (40 cm), dual disc	1.2–3.9 in (3–10 cm), set in the app	7.5Ah	300+ object types avoided; crosses 2.2 in obstacles; 31.5 in narrow passages	IPX6 (can be hosed down)	Under 65 dB	23.9 kg (52.7 lb)	Wi-Fi + built-in 4G; 3 years of 4G data included	3 years	Under 1.2 in from the boundary (EdgeMaster 2.0)
Segway Navimow X430	RTK + vision, ~1 acre	A large, steep lawn with Network RTK coverage	1 acre (15 hours to cover it, per Navimow)	Network RTK + 360° vision + VIO (EFLS NRTK); no wire	84% (40°)	17 in (2 discs, 12 blades), floating deck	0.75–4 in, automatic adjustment	12.8Ah; 110 min mowing per charge, 90 min to recharge	200+ object types (360° RGB camera + ToF); 2.8 in steps	IP66; weather forecast + rain sensor	68 dB(A)	63.71 lb	Bluetooth, Wi-Fi, cellular (1 year of Connect+ free, then a paid annual renewal)	3 years device and charging station, 2 years battery	–
Dreame A3 AWD Pro 5000	LiDAR + vision, ~1.2 acres	An acre-plus lawn where you want LiDAR navigation instead of RTK	1.20 acres (5,000 m²)	360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK	80% (38.7°)	15.8 in (40 cm), dual disc	1.2–3.9 in (3–10 cm), set in the app	10Ah	300+ object types avoided; crosses 2.2 in obstacles; 31.5 in narrow passages	IPX6 (can be hosed down)	Under 65 dB	23.9 kg (52.7 lb)	Wi-Fi + built-in 4G; 3 years of 4G data included	3 years	Under 1.2 in from the boundary (EdgeMaster 2.0)

The picks

#1 · LiDAR + vision, ~1/4 acre

Dreame A3 AWD 1000

Check price on Amazon(paid link)

A four-wheel-drive robot mower for lawns up to a quarter acre that maps and navigates with 360° 3D LiDAR and stereo cameras, so there is no boundary wire and no RTK antenna to install.

Best for: A sloped or tree-shaded quarter-acre yard where you want no wire and no antenna

Rated area: 0.25 acre (1,000 m²)
Navigation: 360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK
Max slope: 80% (38.7°)
Cutting width: 7.9 in
Cutting height: 1.2–3.9 in, set in the app (0.2 in steps)
Battery: 5Ah
Obstacles: 300+ object types avoided; crosses 2.2 in obstacles; 23.6 in narrow passages
Edge cut: Under 1.9 in from the boundary (EdgeMaster)
Weather protection: IPX6 (can be hosed down); rain, snow and frost sensing
Noise: Under 62.8 dB
Weight: 16.1 kg (35.5 lb)
Connectivity: Wi-Fi + built-in 4G; 1 year of 4G data included per the listing
Warranty: 3 years

Nothing to install in the yard: no perimeter wire to bury and no RTK antenna to mount and power
LiDAR does not depend on a clear view of the sky, so tree cover and tall walls that weaken satellite positioning are not its weak spot
80% slope rating with true four-wheel drive, the steepest of the quarter-acre picks here
Cutting height is changed from the app, not a knob on the mower

No RTK at all: positioning rests on LiDAR recognizing the yard's fixed features (Dreame states a 164 ft detection range), so a wide open lawn with little structure nearby is worth asking about before you buy
7.9 in cutting width is narrow, which is why it is rated for a quarter acre
Two separate lawns need a second charging station: Dreame says mapping starts from the station

Read the full write-up →

#2 · RTK + vision, ~1/4 acre

Segway Navimow i210 AWD

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A quarter-acre wire-free mower that positions itself with tri-frequency Network RTK fused with a 140° camera, plus all-wheel drive with electronic stability control for slopes up to 45%.

Best for: An open quarter-acre lawn with good sky view and Network RTK coverage

Rated area: 0.25 acre (16 hours to cover it, per Navimow)
Navigation: Network RTK + vision (EFLS NRTK); no wire; local antenna only where NRTK is unavailable
Max slope: 45% (24°)
Cutting width: 7.1 in (1 disc, 5 blades)
Cutting height: 2–3.6 in, manual adjustment
Battery: 5.1Ah; 120 min mowing per charge, 120 min to recharge
Obstacles: 150+ object types (VisionFence, 140° RGB camera); 1.57 in steps
Weather protection: IP66; weather-forecast adaptive
Noise: 59 dB(A)
Weight: 27.12 lb
Connectivity: Bluetooth, Wi-Fi, cellular (1 year of Connect+ free, then a paid annual renewal)
Warranty: 3 years device and charging station, 2 years battery

Network RTK removes the local antenna where coverage exists, and Navimow includes NRTK access at no extra cost
Satellite positioning does not depend on the yard having walls or trees to recognize, so open lawns suit it
The quietest rated mower on this page at 59 dB(A)

RTK needs satellite signal: Navimow fuses vision to help under trees and near walls, but heavy cover is the classic RTK weak spot
Antenna-free only where Network RTK covers your address; Navimow has a postcode checker, and the box includes a GNSS antenna kit otherwise
45% slope rating is well below the LiDAR and X4 picks here
Cutting height is set by hand on the mower, not from the app

Read the full write-up →

#3 · LiDAR + vision, ~7/8 acre

Dreame A3 AWD Pro 3500

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The larger A3 chassis: the same LiDAR-plus-vision navigation and 80% slope rating, with a 15.8 in dual-disc deck and a 7.5Ah battery for lawns up to 0.87 acre.

Best for: A half- to seven-eighths-acre lawn with slopes, trees or a complicated layout

Rated area: 0.87 acre (3,500 m²)
Navigation: 360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK
Max slope: 80% (38.7°)
Cutting width: 15.8 in (40 cm), dual disc
Cutting height: 1.2–3.9 in (3–10 cm), set in the app
Battery: 7.5Ah
Obstacles: 300+ object types avoided; crosses 2.2 in obstacles; 31.5 in narrow passages
Edge cut: Under 1.2 in from the boundary (EdgeMaster 2.0)
Weather protection: IPX6 (can be hosed down)
Noise: Under 65 dB
Weight: 23.9 kg (52.7 lb)
Connectivity: Wi-Fi + built-in 4G; 3 years of 4G data included
Warranty: 3 years

Twice the A3 AWD's cutting width, with the same no-wire, no-RTK setup
Tighter edge cut than the smaller A3 (under 1.2 in), so less string-trimming along borders
Dreame's LiDAR range rises to 230 ft (70 m) on the Pro, which matters more on a bigger lot

Needs a 31.5 in passage, so a narrow side gate the smaller A3 fits through may block it
Over 50 lb: carrying it between separate lawns is a real lift
Same LiDAR caveat as the A3: very open ground with few fixed features nearby is the case to check

Read the full write-up →

#4 · RTK + vision, ~1 acre

Segway Navimow X430

Check price at Segway Navimow

A one-acre, four-wheel-drive mower with a 17 in twin-disc deck, motorized height adjustment and Network RTK fused with 360° cameras and visual-inertial odometry, rated for 84% slopes.

Best for: A large, steep lawn with Network RTK coverage

Rated area: 1 acre (15 hours to cover it, per Navimow)
Navigation: Network RTK + 360° vision + VIO (EFLS NRTK); no wire
Max slope: 84% (40°)
Cutting width: 17 in (2 discs, 12 blades), floating deck
Cutting height: 0.75–4 in, automatic adjustment
Battery: 12.8Ah; 110 min mowing per charge, 90 min to recharge
Obstacles: 200+ object types (360° RGB camera + ToF); 2.8 in steps
Weather protection: IP66; weather forecast + rain sensor
Noise: 68 dB(A)
Weight: 63.71 lb
Connectivity: Bluetooth, Wi-Fi, cellular (1 year of Connect+ free, then a paid annual renewal)
Warranty: 3 years device and charging station, 2 years battery

Highest slope rating on this page (84%) and the widest deck (17 in)
Widest cutting-height range here, adjusted automatically
360° cameras plus visual-inertial odometry back up RTK where the sky view is poor

The loudest and heaviest mower here: 68 dB(A) and nearly 64 lb
RTK still needs satellite signal and, without Network RTK at your address, a local antenna

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#5 · LiDAR + vision, ~1.2 acres

Dreame A3 AWD Pro 5000

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The A3 AWD Pro with the 10Ah battery: same chassis, navigation and 15.8 in deck as the 3500, rated for 1.20 acres.

Best for: An acre-plus lawn where you want LiDAR navigation instead of RTK

Rated area: 1.20 acres (5,000 m²)
Navigation: 360° 3D LiDAR + binocular AI vision (OmniSense 3.0); no wire, no RTK
Max slope: 80% (38.7°)
Cutting width: 15.8 in (40 cm), dual disc
Cutting height: 1.2–3.9 in (3–10 cm), set in the app
Battery: 10Ah
Obstacles: 300+ object types avoided; crosses 2.2 in obstacles; 31.5 in narrow passages
Edge cut: Under 1.2 in from the boundary (EdgeMaster 2.0)
Weather protection: IPX6 (can be hosed down)
Noise: Under 65 dB
Weight: 23.9 kg (52.7 lb)
Connectivity: Wi-Fi + built-in 4G; 3 years of 4G data included
Warranty: 3 years

The largest rated area on this page without any RTK or wire
Battery is the only change from the 3500, so everything that suits a 3500 yard carries over

Same 15.8 in deck as the 3500: the extra area comes from longer runs, not faster cutting
On an open acre-plus lot, RTK positioning has the easier job; confirm the LiDAR has fixed features to work with

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Working out what you need before you buy? Read the home electrification guides.