The al ko energyflex sf 4036 cordless scarifier is the ideal machine for removing thatch and debris from smaller gardens'. '.strtoupper('i')ts cable free design makes for flexible working and the battery power offers a clean and quiet alternative to petrol power'. '.strtoupper('a')ll the tools can be operated by a single 36v battery and 36v battery charger not included'. '.strtoupper('t')he battery running times for the energyflex 36v range are 4ah 10 minutes and 5ah 15 minutes'. '.strtoupper('t')he energyflex sf 4036 is fitted with 12 powerful scarifying blades called tines'. '.strtoupper('t')he robust steel knives remove thatch and debris from the lawn by slicing into the ground'. '.strtoupper('t')he removed debris is collected into a bag at the rear'. '.strtoupper('t')he height of the tines can be adjusted via a central lever'. '.strtoupper('t')he compact 36cm working width make the energyflex sf 4036 easy to maneuverer'. '.strtoupper('b')attery and charger not included. recommended working area up to 250msq.specificationstype cordlesspower al ko energyflex 36v rechargeable batteryrunning time  4ah 10 mins, 5ah 15 minscharge time 4ah 90 mins, 5ah 120 minsworking width 36cmblades 12 steel tinesheight adjustment centralcollector volume 30lweight 11.7kgwarranty 5 year domestic optional extra lawn rake tine drum