Robomow RS 630 is designed for lawns up to 3000 sq m (32 thousand sq ft) and it is the only mower in this class that can mow the grass all to the edge. The Robomow RS 630 is the first in the Robomow line that uses Lithium-ion (Lithium Iron-Phosphate) battery. It allows the robot to run up to two hours on a single charge.