Makita 18V LXT Lithium-Ion Brushless Cordless Combo Kit 5.0 Ah (2-Piece). Variable 2-speed hammer driver-drill with Makita built BL brushless motor delivers (0 RPM – 550 and 0 RPM – 2,100 RPM) and 1,250 in. Of peak torque, weighs only 6.0 lbs. Impact driver features 4-speed power selection (0 RPM – 1,100 RPM/0 RPM – 2,100 RPM/0 RPM – 3,200 RPM/0 RPM – 3,600 RPM and 0 IPM – 1,100 IPM/0 IPM – 2,600 IPM/0 IPM – 3,600 IPM/0 IPM – 3,800 IPM) provides 1,600 in. Of max torque, weighs only 3.4 lbs. Efficient BL brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge. Electronically-controlled BL brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application. Extreme Protection technology (XPT) is engineered for improved dust and water resistance for operation in harsh conditions. Equipped with star protection computer controls to protect against overloading, over-discharging and over-heating. Rapid optimum charger communicates with the battery’s built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperature. Rapid optimum charger has a built-in fan to cool the battery for faster, more efficient charging. Makita technology delivers category-leading charge time so the batteries spend more time working and less time sitting on the charger. 18-Volt LXT lithium-ion 5.0 Ah battery BL1850B features an integrated LED battery charge level indicator. 18-Volt LXT lithium-ion 5.0 Ah battery BL1850B reaches a full charge in 45-minutes or less. Compatible with Makita 18-Volt lithium-ion batteries with a Star symbol. California Proposition 65 Warning Required. Internal Supplier Part #. Internet Product Code (IPC). Keyless / Keyed Blade Change. Number of Batteries Included. Number of Tools Included. (2) 18V LXT® Lithium-Ion batteries, Rapid Optimum Charger, bag, Accessories Included, Case.