Cordless lawn mower electric lawn mower series bosch rotak cutting width 43 cm max lawn area 600 m min cutting height 20 mm max cutting height 70 mm cutting height steps 10 positions battery voltage 36 v battery capacity 26 ah type of battery li ion charging time 60 min battery charge indicator discharge rear discharge grass box capacity 50 litres wheels plain bearing wheels start system electric start features central cutting height adjustmen