RELEASED 2021REASSESSED 2026.08.07

Robomow

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.

Price$1,499 maker’s listNo retailer listing

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 AutonomyHandles new obstacles and re-plans in real time; rare in consumer products.
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 · 4 sources reviewed
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Provisional4 sources reviewed

Enough has been reviewed to classify, but gaps remain across source types.

Sources reviewed

Specification sources2 sourcesReviewed

Pages the published specifications were read from.

Monitoring record2 sourcesReviewed

Sources behind the tracker entries following this robot.

Also monitored, nothing listed yet

Manufacturer documentationPending

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

Press & video reviewsReviewed

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

Owner reportsOngoing

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

How we evaluate evidence →

Robovations Score

How this number was reached

66of 100

Capable

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 it reaches 30% of the rubric we publish no number at all.

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 300 square meters 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 18 centimeter 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 18 centimeter 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.

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 300 square meters, 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

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

SPECIFICATION

The full spec sheet.

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

Dimensional drawing

Key specificationsManufacturer-published

Footprint: 24 × 22 in · 8 in tall
Weight: 16.5 lbs
Battery: 120 Wh · Li-ion

Where it lands · ranked across 91 robot lawn mowersThis robotMedianTypical range

Runtime75min

30 min240 min

Near median

Price$1,499

$451$5,999

Near median

Noise72dB

50 dB82 dB

Above median

Charge time180min

30 min300 min

Above median

Weight16.5lbs

11.9 lbs134 lbs

Bottom of range

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

Official referencesProduct page

OWNERSHIP

Living with it.

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

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.

Owner effort~20 minhands-on per month

Consumables$75replaceable parts / yr

Reliability trend Stableowner-reported arc

What goes wrong · 3 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.

Step-by-step fixesBoundary Wire BreakCutting Uneven or Scalping the Lawn?Won’t Charge or Return to Its Base?All robot mower guides

Upkeep routine

Each useEvery cycle

Clear debris from blade housing and dock contacts.

Weekly52×/yr

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

Monthly12×/yr

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

Seasonal4×/yr

Blade replacement (the single 18 cm blade is replaced, not sharpened); winterize dock and battery storage indoors.

Yearly1×/yr

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

Cost over time · past the sticker

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

BladesSeasonally

Replacement cadence from the maintenance schedule; prices shown where the source documents them.

Safety notes

CautionBlade hazard during manual maintenance: Blade guard removes easily; keep hands away during dock operations and seasonal checks.

CautionElectrical hazard in wet conditions: Dock operates at 110V; keep connections dry and do not operate in heavy rain.

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Mar 2021 · ReleaseRobomow launches RT300 as new small-garden mower platform in 2021
Dec 2021 · NewsMTD Products acquisition signals Robomow brand restructuring under new ownership
Jul 2026 · AssessmentRobovations Score recorded at 52 of 100
Jul 2026 · AssessmentRobovations Score revised 52 → 58
Aug 2026 · AssessmentRobovations Score rescored under v4.0: 58 → 59
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 59 → 61
Aug 2026 · AssessmentRobovations Score revised 61 → 66
Aug 2026 · AssessmentRecord status: Verified → Provisional

Editorial comparisons

How Robomow RT300 compares.

All comparisons →

Goal-based

Small urban lawns: is a simple wired robot mower better than RTK?

Gardena Sileno City + 3 more

Read comparison

Common 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 300 m², 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 300 m², 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/

Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Robomow RT300 and Ambrogio L60 Elite side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with McCulloch ROB R1000, Gardena Sileno Life 750, Ambrogio Twenty Elite.

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 the database

Updated weekly with new entries and reclassifications.

Robomow RT300

Will the Robomow RT300 work on your yard?

The full spec sheet.

Living with it.

How the assessment has moved.

How Robomow RT300 compares.

Small urban lawns: is a simple wired robot mower better than RTK?

What people actually ask.

Other robot lawn mowers we have classified.

McCulloch ROB R1000

Ambrogio Twenty Elite

Gardena Sileno Life 750

Husqvarna Automower Aspire R4

Reference the Robomow RT300 classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level II.