Makita 18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge and Charger Starter Kit BL1840BDC1 - The Home Depot
Makita BL1840B 18V LXT Lithium-Ion 4.0Ah Battery, Black - Amazon.com
Makita USA - Product Details -XT261M
Makita XUX02SM1X4 18V LXT® Lithium‑Ion Brushless Cordless Couple Shaft Power Head Kit With 13 Inch String Trimmer & 10 Inch Pole Saw Attachments ( 4.0Ah)