The Makita 18V LXT Lithium-Ion Brushless 2-Piece Combo Kit (model XT281S) gives you two efficient brushless tools for drilling, driving and fastening. The Kit includes the category's fastest-charging 3.0Ah batteries and the breadth-of-line of the Makita 18V LXT system, so your batteries will power the expanding range of Makita tools and accessories. The 18V LXT 3.0Ah batteries each reach a full charge in only 30 minutes. It's part of Makita's expanding 18V Lithium-Ion system, the world's largest cordless tool system powered by 18V Lithium-Ion slide-style batteries. Makita 18V Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger. For improved tool performance and extended battery life, Makita created Star Protection Computer Controls. Star Protection is communication technology that allows the Star Protection-equipped tool and battery to exchange data in real-time and monitor conditions during use to protect against overloading, over-discharging and overheating.