This genuine Makita 18V LXT Lithium-Ion battery and charger kit provides reliable, high-performance portable power for an extensive lineup of compatible Makita cordless tools. The kit includes one 18-Volt LXT 4.0 Ah slide-style battery with an integrated LED fuel gauge indicator and a Rapid Optimum Charger that features built-in fan cooling to protect components and speed up charge cycles. Built with Star Protection Computer Controls, the intelligent communication system monitors voltage, current, and internal temperature to safeguard against overloading, over-discharging, and overheating during intense operations. Designed for durability in tough worksite environments, the impact-resistant outer casing and internal shock-absorbing liner protect the internal cells from drops and vibration