Segway Navimow i215 LiDAR vs Segway Navimow i220 LiDAR

Which one should you buy?

The hardware is otherwise the same, so this comes down to rated working area and the battery behind it. The i220 is rated for 2,000 m² against the i215's 1,500 m², runs 210 minutes per charge against 160, and recharges in 2 h against 2 h 10 min. It also costs more — the current figures for both are in the table above, and we re-check them periodically rather than continuously.

Take the i215 if your lawn is comfortably under about 1,200 m². You would be paying for capacity you never use, and the shorter run time is irrelevant when the machine finishes early anyway.

Take the i220 if your lawn is roughly 1,200 m² or more, or if it is broken up by slopes, trees and narrow passages. Rated areas assume easy ground; on an awkward plot the extra capacity and the 50 extra minutes per charge are what stop the mower falling behind the grass.

Above about 1,700 m², think hard about either. You would be running at the edge of the rating every week with no slack for a wet spring. The X-series, or two machines, is the more honest answer.

What the numbers do not tell you

Both share a 45% maximum incline inside the working area, but Segway publishes a separate 25% limit at the boundary. If your slope runs right up to a fence or a drop, that lower figure governs, and neither model gains you anything over the other.

The charging figures are close, but the i220 also works 50 minutes longer between charges, so on the same lawn it makes fewer trips back to the base station. The gap in total cycle time is wider than the charging times alone suggest.

Neither model has been physically tested by Garden Robot Atlas. Everything above comes from the manufacturer's published specifications, linked as sources on each mower's page.