Makita XML08PT1 DEMO 21" Self-Propelled Lawn Mower with (4) 5.0Ah Batteries 36V is a welcome solution for efficient grass cutting. It’s powered by two 18V LXT batteries, but holds four batteries for twice the run time. There is no need to leave the 18V battery platform. The Makita-built motor delivers up to 2,800 RPM. The Quiet Mode setting reduces noise by providing constant speed control at 2,300 RPM. The mower offers ease-of-use features including quick height adjustments, mulching capability, and a commercial-grade steel deck. It features a 3-in-1 design for mulching, bagging, or side discharge.The XML08PT1 includes the lawn mower, four fast-charging 18V LXT lithium-ion 5.0Ah batteries and an efficient 18V Dual Port Rapid Optimum Charger.