Segway Navimow i105 VS Segway Navimow i108

At their core, the Navimow i105 and Navimow i108 are nearly identical machines in terms of physical form factor and connectivity. Both share the exact same dimensions (285 × 385 × 545 mm), the same 10,900 g weight, and the same full connectivity suite — Wi-Fi, Bluetooth, a dedicated smartphone app, and remote control support. This means the choice between them is not about ergonomics or smart features, but purely about performance capacity.

The real divergence lies in two areas: cutting width and coverage area. The i108 sports a 21 cm cutting width versus the i105's 18 cm, a 17% wider blade pass that directly translates into fewer passes needed per mowing session and faster completion times on the same lawn. More critically, the i108 is rated for a recommended area of 640 m² (with a maximum lawn coverage of 800 m²), compared to the i105's 400 m² recommended and 500 m² maximum. In practice, deploying an i105 on a lawn approaching 500 m² would push it to its operational limits, while the i108 handles that scenario with comfortable headroom. The i108 also runs 4 dB quieter in standard mode (54 dB vs. 58 dB) — a meaningful difference given that decibels are logarithmic, making it perceptibly less intrusive to neighbors, though both models converge at 50 dB in eco mode.

The i108 holds a clear edge for anyone with a medium-to-large lawn. The wider cut and significantly higher coverage rating mean it will work less hard, complete jobs faster, and remain within safe operational limits on larger plots. The i105 is a sensible choice only for gardens firmly under 400 m², where paying for the i108's extra capacity would offer no practical benefit.

On the features front, the Navimow i105 and Navimow i108 are in complete lockstep — every single capability present on one is identically present on the other. This is a deliberate platform decision by Segway: the two models share the same software and sensor ecosystem, differentiating only on hardware capacity (as seen in the general specs), not on intelligence or automation depth.

That shared feature set is genuinely impressive as a baseline. The combination of obstacle sensing, a rain sensor, and a frost sensor means the mower can autonomously react to the three most common conditions that would damage either the lawn or the machine itself. Layered on top, weather-adaptive scheduling and the ability to work in rain give it meaningful operational flexibility — it is not a fair-weather-only device. Auto docking closes the loop on full autonomy, while anti-theft features and the onboard display add security and usability without requiring a phone for every interaction. Voice assistant compatibility with both Alexa and Google Assistant rounds out a well-integrated smart home offering.

This group is a straightforward tie. No feature separates the i105 from the i108 whatsoever. A buyer choosing between these two models should treat features as a non-factor and make their decision based entirely on lawn size and budget — the automation experience will be identical either way.

Performance is where the comparison between the Navimow i105 and Navimow i108 gets genuinely nuanced — neither product dominates outright, and the right choice depends heavily on the specific characteristics of the lawn in question. The most striking gap is slope performance: the i108 is rated for inclines up to 45%, versus the i105's 30%. To put that in perspective, a 30% slope is already a moderately steep garden bank, but 45% approaches the kind of gradient that challenges human footing. For owners with significantly hilly terrain, this is a decisive spec — the i105 would simply be unable to operate safely on slopes the i108 handles as routine.

Session endurance tells a similarly one-sided story. The i108 runs for up to 180 minutes per mowing session, a full three times longer than the i105's 60 minutes. Given the i108's larger target coverage area (as established in the general specs), this extended runtime is a functional necessity rather than a luxury — shorter sessions on bigger lawns would mean more frequent interruptions and docking cycles. Counterintuitively though, the i105 posts a higher working area capacity of 85 m²/h compared to the i108's 62.5 m²/h. This likely reflects how each model's mowing pattern and speed are tuned relative to their cutting width and target lawn size — the i105 moves more ground per hour, but runs out of session time much sooner. On the cutting height side, the i105 reaches a lower minimum of 20 mm versus the i108's 30 mm, giving it a slight edge for users who prefer a short, manicured lawn aesthetic.

Overall, the i108 holds the performance edge for most real-world scenarios — its superior slope tolerance and dramatically longer session time make it the more capable and versatile machine. The i105 carves out an advantage only for owners on flat terrain who want a lower cut finish and can tolerate shorter mowing sessions; in all other respects, the i108 is the stronger performer.

Electrically speaking, the Navimow i105 and Navimow i108 draw from the same power architecture — identical 11V voltage and 367W wattage — meaning neither has an inherent advantage in terms of motor power or energy consumption during operation. The meaningful differentiator here is charge time: the i105 replenishes in just 1.5 hours, while the i108 requires a full 3 hours. Both models feature a removable battery, which is a practical convenience that allows users to charge a spare pack while the mower is deployed, or simply swap out for a fresh one without waiting at the dock.

The i108's longer charge time is a direct consequence of its larger battery capacity — necessary to sustain its 180-minute session runtime established in the performance specs. It is not a flaw so much as an engineering trade-off: more runtime demands more energy storage, which takes longer to refill. For the i108 on a large lawn, the charge cycle will typically fall overnight or during a natural break in the mowing schedule, making the longer wait largely inconsequential in day-to-day use. The i105's faster 1.5-hour turnaround is more relevant for smaller lawns where multiple short sessions in a single day might be desired.

This group results in a contextual tie. The i105 charges twice as fast, but that speed is a reflection of its smaller battery rather than a meaningful engineering advantage. Evaluated against each product's intended use case, both charge times are appropriately matched to their respective session lengths and coverage targets.