Cordless lawn mower electric lawn mower series bosch rotak cutting width 37 cm max lawn area 300 m min cutting height 20 mm max cutting height 70 mm cutting height steps 10 positions engine make bosch battery voltage 36 v battery capacity 26 ah type of battery li ion charging time 60 min number of batteries 1 discharge rear discharge grass box capacity 40 litres wheels plain bearing wheels start system electric start features central cutti