General description LXT Lithium-Ion battery and optimum charging system produces 280 percent total lifetime work with 2x more cycles. The Makita BL1850 batteries feature a 5x lower self-discharge rate, keeping battery cells active and ready for use even after long periods of storage. Charging at any time will not affect the battery, and built-in shock-absorbing features protect the battery from damage. Sixteen firm holding contact terminals reduce the risk of power loss or fluctuation in high vibration work environments. The battery's built-in Memory Chip communicates with the charger to maximize battery life using three Active Controls: Current, Voltage, and Thermal. Technical specifications Voltage: 18V Capacity: 5.0Ah Charging time for two 3.0Ah batteries: 22 minutes Charging time for two 4.0Ah batteries: 36 minutes Compatibility and accessories Suitable for all Makita Li-Ion LXT 18V machines Includes DC18RD Dual Port Charger Usage Designed for demanding applications requiring