Powerful Makita-built BL Brushless motor delivers 74 CFM and 39" water Lift of suction using two 18V LXT Lithium-Ion batteries (batteries not included) Efficient three stage HEPA filtration system captures 99.97% of particulates .3 microns and larger Filter cleaning system is designed to maintain optimal suction efficiency and longer filter life Up to 75 minutes of continuous run time on low setting and 40 minutes on high setting using two 18V LXT Lithium-Ion 5.0Ah batteries BL1850B (batteries not included) Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge