Segway Navimow i105N vs eufy E15: Simple Specs Guide 2026

9 min read by Tyler Novak Updated November 11, 2026

Segway Navimow i105N vs eufy E15 comes down to lawn size, navigation and battery figures. Both are wire-free robot mowers aimed at small residential lawns, but they differ on rated lawn size, navigation method, slope and battery figures. The eufy E15 is rated for about 800 m² (0.2 acre) and says it needs no boundary wire or RTK. The Navimow i105N is rated for lawns up to about 1/8 acre, and published sources describe its positioning differently, so this comparison shows where the figures match and where you should confirm before buying.

The short answer

Lawn size: the i105N is rated up to 1/8 acre (about 5,400 sq ft); the E15 is rated for about 800 m² (0.2 acre, about 8,600 sq ft).
Navigation: both are described as wire-free. Sources describe the i105N’s positioning as RTK plus vision in one listing and a GPS antenna in another. eufy states “No Wire, No RTK, No Signal Issue” for the E15.
Cutting height: the E15 lists 25 to 75 mm (1 to 3 in). The i105N’s range is listed as 51 to 91 mm (2 to 3.6 in) in one source.
Slope: the E15 lists a maximum of 18 degrees. Sources give the i105N’s limit as 30 percent in one listing and as 16 degrees in another, which are roughly the same grade.
Noise: the E15 is listed at 56 dB. We found no dB figure for the i105N.

Which lawn size each one is rated for

Lawn size is the first filter in Segway Navimow i105N vs eufy E15. eufy’s E-series page lists the E15 at a recommended 800 m² (0.2 acre), and its support article describes the E15 as suited to lawns under 800 m². The E18 is the larger eufy model, rated for 800 to 1,200 m² (about 0.3 acre), so the E15 sits at the small end of eufy’s range, as the eufy E15 vs E18 comparison shows.

The Navimow i105N is rated for lawns up to about 1/8 acre, roughly 5,400 square feet, according to both TopTenReviews and SmartHomeCompared, and our Segway Navimow i105N review covers that model in more detail. The E15’s recommended area is about 60 percent larger than the i105N’s rated 1/8 acre.

In our reading, a lawn near 0.12 acre fits the i105N’s rating with little margin, while a lawn near 0.2 acre sits at the E15’s recommended limit. Measure your lawn before you compare anything else, and see how to choose a robot mower for your lawn size if you are unsure. The E15 figure comes from eufy’s E-series page; the i105N figure should be checked against Segway’s own manual.

Cutting width and height

The E15 has a cutting width of 203 mm (8 in) and a cutting height adjustable from 25 to 75 mm (1 to 3 in), according to eufy’s product page, and our eufy E15 review covers the rest of the model. A wider deck covers more ground per pass, but it also needs more clear space to turn around obstacles.

For the i105N, sources disagree on width. SmartHomeCompared gives 7.1 in (18 cm), while another listing gives 8.7 in. Cutting height is listed as 51 to 91 mm (2 to 3.6 in) on SmartHomeCompared, and another site gives 1.2 to 2.4 in. Those figures do not match, so treat both width and height as unconfirmed until you read the i105N manual.

Close-up of a robot mower's cutting height dial with grass clippings around it — Confirm each model's cutting height range in the manual before you buy.

Cutting height matters more on uneven or long grass than the width figure. Bob Vila’s reviewer of the E15 reported that the mower cut low buffalo grass well but struggled with taller dense tall fescue, and performed best at 2.5 in or shorter. That is one reviewer’s observation, not a lab result, and it does not cover the i105N.

In Segway Navimow i105N vs eufy E15, both mowers avoid a perimeter wire (see wire-free versus boundary wire robot mowers), but they use different navigation descriptions. eufy says the E15 uses “hands-free auto mapping” and “precise obstacle avoidance” with no boundary wire and no RTK. The eufy product page does not name a specific sensor for positioning.

The i105N is described differently by different sources. SmartHomeCompared lists RTK satellite positioning with AI vision, and TopTenReviews mentions a GPS antenna. The two descriptions are not identical, so this is a point to confirm with Segway before you buy. Remote boundary mapping through the app is listed in the i105N app descriptions.

In our reading, a yard with many trees or buildings can affect satellite-based positioning, while a camera-based system depends on light and on what the camera can see. No source we read gives a test result that settles which approach works better in a specific yard.

Ask both manufacturers how each mower handles a yard with partial tree cover, and whether it needs a base station placed in an open spot.

Battery, charging and runtime

On battery, Segway Navimow i105N vs eufy E15 is mostly a question of missing data. eufy lists a charging time of 90 to 110 minutes for the E15 on its product page, and the page does not list a battery capacity or a runtime per charge. Bob Vila’s reviewer reported about 1.5 hours to charge the E15 to full, which falls inside that range.

For the i105N, SmartHomeCompared lists a 2.55 Ah battery, about 60 minutes of runtime per charge and about 90 minutes to recharge. Another spec listing gives a much longer runtime, up to 180 minutes, with no independent confirmation. Because the two figures are far apart, the runtime of the i105N is the most important number to verify. Runtime depends on lawn size, grass height and slope, so a published figure is a starting point rather than a guarantee.

Close-up of a robot mower's metal charging contacts meeting the dock plates — Charging time and runtime per charge are the figures to verify for each model.

Slope limit, obstacle sensing and noise

The E15 is listed with a maximum slope of 18 degrees and no percent figure. For the i105N, one listing gives 30 percent, and another gives 16 degrees. Those are close, since 30 percent is about 17 degrees, but a manufacturer figure is still the one to trust.

eufy lists the E15’s noise level at 56 dB, and its brand blog describes robot mowers in general as around 56 dB compared with about 90 dB for many gas mowers. We found no dB figure for the i105N, and SmartHomeCompared describes it only as very quiet. Noise is hard to compare without a shared test standard, so a listed dB number from one brand should not be read as a ranking against another.

On obstacle sensing, the E15’s listing describes precise obstacle avoidance, and the reviewer observed it stopping and steering around shoes and dog toys. The i105N is listed with AI vision avoidance, pet and child detection and a lift-and-tilt sensor, though those claims come from a reviewer summarizing the manufacturer’s specification.

App features and anti-theft

eufy lists GPS and 4G location tracking as part of the E15’s anti-theft system. The i105N’s app is listed with mapping of up to 12 zones, no-go zones, scheduling, weather-based scheduling, a PIN lock and an anti-theft alarm. GPS tracking on the i105N needs an optional 4G module (Access+), which is an added cost.

Check whether the tracking features you want are included in the base price or sold as an add-on for each model, since bundles differ by region and date.

The table below compares Segway Navimow i105N vs eufy E15 figure by figure. Each row notes its source status. “Not listed” means the source we read did not give that number.

Spec	eufy E15	Segway Navimow i105N
Rated lawn size	About 800 m² (0.2 acre), eufy page	Up to 1/8 acre, TopTenReviews and SmartHomeCompared
Cutting width	203 mm (8 in), eufy page	7.1 in (SmartHomeCompared); 8.7 in in another listing, conflict
Cutting height	25 to 75 mm (1 to 3 in), eufy page	51 to 91 mm (2 to 3.6 in) in one source; 1.2 to 2.4 in in another, conflict
Maximum slope	18 degrees, eufy page; no percent figure	30 percent (SmartHomeCompared); 16 degrees in another listing
Boundary wire	None, per eufy	None, per sources
Positioning	Auto mapping, obstacle avoidance; no RTK per eufy	RTK plus vision in one source; GPS antenna in another
Battery runtime	Not listed	About 60 min (SmartHomeCompared); up to 180 min in another listing, conflict
Charging time	90 to 110 min, eufy page	About 90 min, SmartHomeCompared
Noise	56 dB, eufy page	Not listed (described as very quiet)
Waterproof rating	IPX6, eufy page	IP66, SmartHomeCompared
GPS tracking	GPS and 4G location tracking in anti-theft system	Needs optional 4G module (Access+)

Segway Navimow i105N vs eufy E15: who each option suits

In our reading, the E15 suits a lawn at or below about 0.2 acre where you want a single model with eufy’s published navigation claims and a low listed noise figure. The i105N suits a lawn at or below about 1/8 acre where the app’s zone mapping and the optional tracking module matter to you.

Before you buy either one, confirm these points in the manufacturer’s manual or with support:

Lawn area. Measure your lawn and compare it with the rated size for each model.
Slope. Check the maximum slope in the manual and measure your steepest section.
Cutting height and width. Confirm the i105N figures, which sources give differently.
Runtime. Ask for the i105N’s runtime per charge in writing, since listings range from about 60 to 180 minutes.
Tracking. Check whether GPS tracking is included or an add-on.

Heads up

Several i105N figures come from third-party listings and conflict with each other. This article does not state a price, since prices change by retailer and date. Confirm figures with the manufacturer before you buy.

Frequently asked questions

Does either model in Segway Navimow i105N vs eufy E15 need a boundary wire?

Neither is described as needing a perimeter wire. eufy says the E15 has no wire and no RTK. Sources describe the i105N as wire-free as well, but they differ on whether it uses RTK, a GPS antenna or vision.

Which mower covers a bigger lawn?

The i105N is rated up to about 1/8 acre. The E15 is recommended for about 0.2 acre (800 m²). The E15’s figure is a recommendation, so check the manual for each model before you choose.

Is the E15 quieter than the i105N?

eufy lists the E15 at 56 dB. We found no dB figure for the i105N, so a direct noise comparison is not possible from published sources.

Does the i105N include GPS tracking?

Sources say GPS tracking on the i105N needs the optional 4G module, Access+. Confirm the price and whether it is included with the model you buy.

Sources

eufy E-series robot lawn mower page (eufy, manufacturer): E15 width, height, slope, noise, charging time, IPX6, recommended lawn size, navigation and anti-theft.
eufy support article on E15 and E18 differences (eufy): recommended lawn size for the E15 and E18.
TopTenReviews, Segway Navimow i105N review (third-party review): rated lawn size of 1/8 acre, GPS antenna description, app rating.
SmartHomeCompared, Segway Navimow i105N (third-party spec listing): cutting width and height, slope, battery, sensors, app features and weight.
Bob Vila, eufy E15 robot mower review (third-party review): setup, grass-height observations and obstacle behavior as reported by the reviewer.