Karcher Walk-Behind Floor Sweeper KM 75/40 W BpDescription The KM 75 40 W Bp is the pinnacle of commercial duty sweepers. Coming standard with maintenance free AGM batteries and an onboard charging system, the KM 75 40 W Bp is self propelled, traveling up to 2. 8 MPH, and can climb inclines up to 12%. The standard filter system is 99. 5% efficient, preventing fine dust particles from re entering the environment by utilizing a large suction fan and synthetic pleated filter. The handle operated