The BL1850BDC2X1 kit includes two (2) 18V LXT 5.0Ah Batteries (BL1850B), an 18V LXT Lithium-Ion Rapid Optimum Charger (DC18RC), and a handy carry bag to contain it all. Makita offers over 350 cordless tools that utilize 18V lithium-ion batteries, with many available as "bare tools" (tool only, no batteries or charger included). Pick up the Makita Battery and Rapid Optimum Charger Starter Pack, then purchase the 18V "bare tools" you need to get the job done. It's an ideal way to start building a Makita LXT Cordless System.