The i8+ also included a virtual wall barrier device, ... Battery life. A robot vacuum's battery life determines how long it can clean and how large an area it can cover before recharging.

The most notable change is the car's battery pack; out goes the old 7.1kWh pack, replaced by new 34Ah cells, to give the revised i8 a total of 11.6kWh. "We were able to do that without adding too ...