General description Makita BL1830 18V 3.0Ah Lithium-Ion battery and DC18SD charger provide a powerful and efficient solution for your cordless tools. The battery features an optimum charging system that delivers 280% more lifetime work with 2x more cycles and 5x lower self-discharge, ensuring that the battery cells remain active and ready for use even after long periods of storage. The built-in shock-absorbing features protect the battery, while sixteen firm holding contact terminals minimize the risk of power loss in high vibration environments. The battery's memory chip communicates with the charger to maximize battery life using three active controls: current, voltage, and thermal management. Technical specifications Battery type: Lithium-Ion Voltage: 18V Capacity: 3.0Ah Charger model: DC18SD Charging time: 30-60 minutes Compatible voltage range: 9.6V - 18V Other information STAR Protection Computer Controls™ protect against overloading, over-discharging, and overheating Built-in