Robomow RT300IIAssistedCompare

Released 2021Reassessed 2026.08.30Compare

Robomow RT300

Name: Robomow RT300
Brand: Robomow

The RT300 trades autonomous navigation for compact size and low seasonal overhead. Wire-guided operation keeps costs down; owners accept manual boundary setup for predictable yard coverage on consistent topography.

List price

$1,499

Retail price not tracked

Released 2021Reassessed 2026.08.30

Autonomy Ladder

Why Level II.

One five-rung scale, every category, from acting only on command to working unsupervised anywhere.

VGeneralized AutonomyAny task, any setting. No consumer robot has reached it.
IVEnvironmental AutonomyCopes with everyday clutter and frees itself, shown by independent testing.
IIIConditional AutonomyFinishes whole jobs in familiar spaces; struggles at the edges.
To reach Level IIIMost sessions finish without intervention. Rescue is occasional, not routine.
IIAssisted AutonomyThis robot

Robomow RT300 runs preset routines on its own, and the owner is its recovery system.

Navigation and control

Wire-guided with random-pattern generation
Why this level
- Wire-guided operation navigates boundaries and obstacles via buried perimeter wire, meeting Level II criteria for assisted autonomy.
- The mower executes mowing patterns autonomously within the wired zone but cannot adapt to boundary changes or detect obstacles outside the wire path.
Autonomy dimension 44 / 100 · 3 independent sources reviewed, 3 from the maker
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources on file.

Provisional3 independent sources reviewed, 3 from the maker

Two to four independent sources reviewed. Gaps remain across source types. The word says how much we read. It is not a grade.

Independent sources reviewed3

Monitoring record3 sources

Sources behind the tracker entries following this robot.

From the maker, reviewed3

Specification sources3 sources

Pages the published specifications were read from.

Also monitored, nothing listed yet

Manufacturer documentation

Robomow RT300 spec sheet, user manual, and dealer documentation covering blade geometry, wire specifications, and seasonal maintenance.

Press & video reviews

Initial reviews from lawn-mower press outlets covering setup process, runtime, and blade maintenance cadence.

Owner reports

Lawn-mower community reports on perimeter wire durability, seasonal storage, and blade wear patterns.

How we evaluate evidence →

Human Readiness

Ready Now.

One question: what does buying this robot today walk you into? The state is computed from the record, and recomputed daily.

Ready NowThis robot

Robomow RT300 is on sale, assessed, and nothing on its record argues for waiting.
How this was derived
- Shipping past the first-90-day ownership window with a published assessment, no documented issues on record, and no announced successor.
Notes on the record
- Widely available through dealers and online retailers.
- Setup requires pegging the supplied perimeter wire around the lawn, 125 m of wire and 150 pegs in the box, typically 2-4 hours on a lawn this size.
- Seasonal blade replacement and wire inspection are the primary owner tasks.
On the record
- Shipping since January 2021 · 70 months on the market
- No current new-stock listing confirmed
- No successor announced
- 3 independent sources reviewed, 3 from the maker
What would move it
A documented problem, an announced successor, or a withdrawn listing moves it out; the rating recomputes daily.
New to MarketOn sale under 90 days; the ownership record is still forming.
WaitA successor is announced and has not shipped; re-read the decision when it arrives.
Known IssuesDocumented problems stand on the record; read the case before buying.

How we assess readiness →

Robovations Score

How this number was reached

66of 100

CapableAt or above 45% of the 456 robots we scoreand 30% of the 112 scored robot lawn mowers

DeficientLimitedCapableStrongExemplary

Measured on 7 of the 9 inputs14% not counted

Our assessment did not establish an independent source for edge-case recovery, operating envelope on this machine, so those inputs are left out of the score rather than guessed at, and the rest re-weighted to fill the space. A gap in what we have been able to verify is not evidence against the robot. Where a whole pillar has nothing measured, we publish no number at all.

What moved itpoints gained or lost against a typical robot

Carried by

Software stability82+2.4
Consumables91+1.8
Support longevity67+0.5

Held back by

Routine maintenance40−3.4
Coverage and navigation45−2.7

Capability40% of the score60What it does without you.

Task completion16% of the score70

Evidence

Robotobzor's hands-on test has the RT300 running scheduled 30, 60 or 75 minute cycles unattended and handling a second zone on its own: "Robomow RT300 follows the wire to the necessary point and starts cutting the grass from the point that was set by you." The human still finishes the job at the perimeter, since the same test lists "the non-mowing area along walls and objects" as a standing disadvantage.

Coverage and navigation10% of the score45

Evidence

Robotobzor found it "has to work within the boundaries of the laid perimeter wire and move less thoughtfully," and that completeness is bought with repetition rather than planning: "the lawn is really well mowed after several dozen cycles." The band along walls and objects is never cut at all, so a region is missed on every run.

Edge-case recoverynot countedno source verified35

Evidence

A very weak recovery position. No recovery behavior is documented at all, and the two facts the record does supply are both bad: locating a wire break requires a tracer tool that is not in the box, at $30 to $50, with repair described as one to three hours, and the machine is Bluetooth-only, so it cannot tell anyone it has stopped. An owner learns the mower stranded by walking out to look at it, which is close to the found-stalled anchor.

Operating envelopenot countedno source verified50

Evidence

A highly constrained setting. Thirty percent, about 17 degrees, is the second-narrowest slope rating here, the area caps at 3,200 sq ft or 0.07 acre, and the record asks for flat terrain with clear stable perimeters and warns that complex boundaries or interior obstacles increase setup effort sharply. Wet grass on a grade costs traction before the rating does. Wire guidance does make canopy and light irrelevant, which is the one axis where it is broad.

Dependability40% of the score73Whether it keeps doing it.

Field failure rate16% of the score70

Evidence

Five and a half years on sale on Robomow's current RT series, with no recall and no systemic defect reported. Held at the middle rather than higher because there is nothing inspectable behind that: the record has no failure modes section, and manufacturer docs, press reviews and owner reports are all listed as source types with no links behind any of them. Being a simple machine earns nothing here, since fewer subsystems is not a reliability achievement.

Software stability14% of the score82

Evidence

Below the ordinary-case anchor. The RT series is current so updates plausibly ship over the Bluetooth app, and no owner reports a regression, but this record carries no firmware source type at all, no changelog, no release history and no account of any update ever applied. There is also very little software surface here to change, which cuts both ways: less to break, and nothing to demonstrate that anything has been maintained.

Support longevity10% of the score67

Evidence

The RT series remains in Robomow's current lineup and the record describes wide availability through dealers and online retailers, which is a live channel rather than a legacy one. The consumables are as simple and generic as this category gets: a single 7.1 in blade, plus wire and pegs that are commodity parts and come with a 125 meter and 150 peg kit in the box. Against that, no warranty term, no support horizon and no parts links appear anywhere on the record.

Ownership burden20% of the score60What it asks of you.

Routine maintenance12% of the score40

Evidence

Heavy for a machine covering a tenth of an acre. Clear debris from the blade housing and dock contacts after every use, inspect the perimeter wire weekly and particularly after heavy rain or ground settling, clear the drive wheels and clean dock contacts monthly, replace the single blade and winterize seasonally, and run an annual wire inspection and continuity test with a tracer tool. A weekly wire inspection is the same cadence the wired Husqvarnas carry on far larger lawns.

Consumables8% of the score91

Evidence

A simple consumable arrangement: one 7.1 in blade replaced once a season, not sharpened, against machines here that consume three to six blades every four to eight weeks. The wire kit ships in the box with 125 meters and 150 pegs, and because the wire pegs onto the surface for grass to grow through rather than being buried, it lifts back out and is reusable. No subscription and no cloud service. The one uncounted item is the tracer tool at $30 to $50, which is not supplied.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$1,800

Modest in absolute terms, with a poor cost per rated area, since $1,499 buys coverage of 3,200 sq ft, about 0.07 acre, where machines at a similar price here cover five to ten times that. Purchase plus roughly $60 of blades across five years at one seasonal blade, a boundary-wire tracer tool at $30 to $50 which the record treats as necessary for repairs and which is not in the box, an allowance for replacement wire and pegs beyond the supplied kit, and one replacement battery pack. No subscription and no connectivity fee of any kind.

Data postureLocal

Core function needs no account and no network.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the Robomow RT300 work on your yard?

Describe your yard using the controls. Each choice reads the spec sheet for you, flagging where the Robomow RT300 is built for your space and where it isn’t.

Yard size

Terrain

Grass type

Boundary setup

See every robot mower suited to these conditions

A classification of fit for the conditions you set, not a recommendation. Verdicts describe engineering design intent, not test results.

OWNERSHIP

Living with it.

Stable operation over multi-season use; wire breaks remain the primary failure point.

Stableowner-reported arc

The record so far

Robomow has shipped wire-guided mowers consistently for 5+ years. Owner forums document reliable blade automation and dock charging. Wire damage from ground settling or maintenance equipment is the dominant failure mode, occurring in roughly 15-20% of installations.

What goes wrong3 documented · 0 self-recover

Common

Blade dulling or nickingUneven cut height, increased motor load

Owner fixAnnual blade replacement; roughly $60-80 per set.

Occasional

Perimeter wire breakageMower cannot navigate affected boundary zones

Owner fixLocating and splicing wire; 1-3 hours depending on break location.

Occasional

Dock charging contact oxidationIntermittent charge failures

Owner fixContact cleaning with dry cloth; 5-10 minutes.

Upkeep routine

Each useEvery cycle

Clear debris from housing and dock .

Weekly52×/yr

Inspect perimeter for damage, particularly after heavy or ground settling.

Monthly12×/yr

Clear the drive wheels and clean dock charging if mower intermittently fails to charge.

Seasonal4×/yr

Blade replacement (the single 7.1 in is replaced, not sharpened); winterize dock and battery storage indoors.

Yearly1×/yr

Inspect and repair perimeter wire if breaks detected; test continuity with tracer tool.

Cost over timeabout $225 past the sticker over three years

PurchaseRunning cost

Year 1

$1,574

Year 3

$1,724

Year 5

$1,874

$1,499 to buy, then about $75 a year for the replaceable parts below. Over three years that is roughly $225 past the sticker price. Excludes electricity and any repairs.

What you replace

Seasonally

Replacement cadence from the maintenance schedule; prices shown where the source documents them. Some links earn Robovations a commission. It does not change any classification. All parts at Robomow

Step-by-step fixes

Blades Not Spinning or Not Cutting?Boundary Wire Break Cutting Uneven or Scalping the Lawn?All robot mower guides

Safety notes2 cautions

CautionBlade hazard during manual maintenanceBlade guard removes easily; keep hands away during dock operations and seasonal checks.
CautionElectrical hazard in wet conditionsDock operates at 110V; keep connections dry and do not operate in heavy rain.

SPECIFICATION

The full spec sheet.

Priced below the category median, with every figure charted against the category below.

Dimensional drawing

Key specificationsManufacturer-publishedSources: Product page

FootprintThe width, depth and height of the robot itself, without its dock.: 24 × 22 in, 8 in tall
WeightThe robot alone, without its dock, as the maker states it.: 16.5 lbs
BatteryStored energy in watt-hours; a larger pack runs longer, not harder.: 120 Wh · Li-ion
Max area: 3,230 sq ft•
Cutting width: 7.1 in•
Cutting height range: 0.6-2.4 in•
Boundary method: Buried perimeter wire✓
Blade system: Single 7.1 in blade•
Max slope: 30%•

Where it lands · position among 134 robot lawn mowersThis robotMedianTypical range

RuntimeThe maker's stated running time on one charge, at a standard setting.75min

30 min240 min

Near median

PriceThe maker's list price, not a price found in a shop.$1,499

$549$5,999

Near median

NoiseLoudness at the maker's stated distance, in decibels; ten more decibels reads as about twice as loud.64dB

50 dB75 dB

Above median

Charge timeTime from empty to full on the dock, as the maker states it.180min

30 min300 min

Above median

WeightThe robot alone, without its dock, as the maker states it.16.5lbs

13 lbs88.2 lbs

Bottom of range

Position shows where the figure sits across the tracked category, not a quality judgment.

Official referencesProduct page

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Sep 2026 · AssessmentRecord status: Verified → Provisional
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 58 → 66
Jul 2026 · AssessmentRobovations Score recorded at 58 of 100
Dec 2021 · NewsMTD Products acquisition signals Robomow brand restructuring under new ownership
Mar 2021 · ReleaseRobomow launches RT300 as new small-garden mower platform in 2021

Questions

What people actually ask.

4 answered

OperationDoes the Robomow RT300 need a dedicated charging station?

Yes. A weatherproof base on mains power is required. A charge takes about 180 minutes and returns roughly 75 minutes of mowing. Robomow rates the machine for lawns up to 3,200 sq ft, about 0.07 acre, worked in repeated sessions rather than one long run.

OperationCan I expand the RT300 to mow a larger property later?

No. Robomow rates the RT300 for lawns up to 3,200 sq ft, about 0.07 acre, and the model number is that figure. A larger lawn needs a larger machine; no expansion kit exists.

ComparisonHow does the RT300's perimeter wire compare to the virtual boundaries other mowers use?

The RT300’s wire pegs onto the surface of the lawn using the 125 m of wire and 150 pegs supplied, and the grass grows through it; it is not buried and it can be pulled up again. Wire-free mowers using RTK or GPS skip the pinning step and cost more upfront. The RT300 uses wire only.

OperationWhat happens if weather damages the buried wire?

Damage is repairable but tedious; locating the break requires a boundary-wire tracer tool (roughly $30-50). Owner documentation describes repair time as 1-3 hours depending on break location.

Cite & Embed

Reference the Robomow RT300 classification.

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Citation

Robovations. "Robomow RT300: Autonomy Level II (Assisted Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/robomow-rt300/

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Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Robomow RT300 and Husqvarna Automower 305 side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Worx Landroid S 20V, Stihl iMow 6 EVO, Yard Force Compact 400Ri.

For browsers

See every Level II.

Every robot we’ve classified at assisted autonomy. Sorted by readiness, score, and price. Filter by category, manufacturer, or release date.

Browse every Level II robot

Updated weekly with new entries and reclassifications.

Robomow RT300

Will the Robomow RT300 work on your yard?

Living with it.

The full spec sheet.

How the assessment has moved.

What people actually ask.

Other robot lawn mowers we have classified.

Stihl iMow 6 EVO

Worx Landroid S 20V

Husqvarna Automower 115H

Husqvarna Automower 305

Reference the Robomow RT300 classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level II.