The genuine Makita 1964263 (DC18SF) 18V LXT Lithium-Ion Four Port Charger is designed for efficiency, allowing simultaneous charging of up to four 18V LXT Lithium-Ion batteries. This advanced charger optimizes battery life through active communication with the battery's built-in chip, controlling current, voltage, and temperature. A built-in fan cools batteries during charging, ensuring faster charge times and peak performance. Compatible with 18V LXT and 18V Compact Lithium-Ion batteries, it fully charges four 3.0Ah batteries in 60 minutes, four 4.0Ah in 80 minutes, four 5.0Ah in 100 minutes, and four 6.0Ah batteries in 120 minutes.