Motor:Brushless Motor. Adapted to 18V Makita battery. - Powerful Brushless Motor,Strong power, more stable. High load so that can not easy to burn. √ compatible for 18V B series lithium battery,such as BL1850B(197285-8),BL1840B(197270-1),BL1830B(197602-2),BL1430B(197618-7),BL1820B(197487-6);.