The Makita 18V LXT® Lithium-Ion Cordless 4-Piece Combo Kit (model XT444MR) is built for the pro-user who demands a range of best-in-class cordless solutions. The XT444MR includes Lithium-Ion cordless tools for drilling, driving, fastening, and demolition, as well as an L.E.D. flashlight. For increased versatility the kit includes an 18V LXT 4.0Ah battery with a charge time of only 40 minutes, and an 18V Compact 2.0Ah battery with a charge time of only 25 minutes. Both batteries are fully compatible with over 100 Makita 18V Lithium-Ion tools and accessories. It’s part of Makita’s expanding 18V Lithium-Ion series, the world’s largest cordless tool line-up powered by an 18V Lithium-Ion slide-style battery. 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.