Cordless lawn mower electric lawn mower mulching mower series wolf garten li ion power cutting width 34 cm max lawn area 250 m min cutting height 20 mm max cutting height 60 mm cutting height steps 5 positions battery voltage 72 v battery capacity 11 ah type of battery li ion charging time 300 min discharge rear discharge grass box capacity 35 litres start system electric start features central cutting height adjustment height adjustable handle