The LB85EL is most suitable for lawns of 1/2 to 3/4 acres (24000 sq ft of grass area). It features brushless motors and a larger battery for the longer run times required between visits to its included docking station. The mowing/charging ratio of the mower is about equal at three hours and it can handle about twice as much lawn area that its Jr, the LB75DX
The included docking station allows the mower top operate on a schedule and will automatically deploy at the time of day that you desire and automatically return to its dock to recharge or at the end of it scheduled mowing time. It can be programmed to travel its perimeter wire to automatically start mowing in separate areas (zones). If it rains, a built in rain sensor will tell the mower to return to its dock and await dry conditions. Efficient bi-directional mowing means the mower simply reverses at the border instead of wasting energy turning itself around. A long life Lithium Ion battery powers the unit and provides plenty of power. An optional ios/android app will allow you to direct the mower for spot clean ups or manual relocation to another area. Its small size allows it to maintain tight areas and will also climb grades up to 25 degrees*. The noise levels are very low and a comparable to that of a dishwasher at (65-75) decibels).
* If you can safely operate a push mower in an area, the LB85EL should handle it just fine.
*Please note that a relatively flat "run-out" area is required at the bottom of any steep grade where a perimeter wire is located.