Makita is the innovation leader in Brushless Motor technology, and the 18V LXT Lithium-Ion cordless 2-piece combo kit (model XT257M) has two BL Brushless Motor solutions that deliver longer run time, increased power and speed, and longer tool life. The 18V LXT 4.0 Ah battery provides 35% more run time per charge than the 3.0 Ah battery (BL1830), yet it charges in only 40 minutes – the fastest charge-time in the category – for less downtime and increased productivity. The XT257M includes a BL Brushless Motor Hammer Driver-Drill with 1,090 in. lbs. Of torque, the most in the category. The kit also includes a BL Brushless Motor impact driver with a full 1,420 in. lbs. Of max torque, yet weighs only 3.4 lbs. (with battery). The XT257M is a total solution for most drilling, driving and fastening applications. Both tools feature Extreme Protection Technology (XPT), engineered for increased dust and water resistance for operation in harsh job site conditions. 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. For increased versatility, the tool can also be powered by Makita 18V LXT and compact Lithium-Ion batteries with the star symbol on the battery indicating STAR Protection inside.