inclu : 6.0ah Battery x2, Rapid Charger x1, Makpac case x1 Integrated L.E.D. battery charge level indicator allows user to monitor battery charge Provides up to 2X more run time per charge compared to BL1830 Reaches full charge in 55 minutes or less Compatible only with Star Protection tools, indicated by the Star Symbol™ and/or Yellow Battery Receiver under the tool Battery delivers consistent power and run time in extreme temperatures, even in winter (-4°F/-20°C) Equipped with Star Protection Computer Controls™ to protect against overloading, over-discharging and over-heating Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect the battery Sixteen contact terminals maintain a constant connection with the tool to help prevent power loss or fluctuation, even during high-vibration applications Battery resists self-discharge and remains ready for use even after long periods of storage Makita 18V Lithium-Ion is the world's largest cordless tool line-up powered by an 18V Lithium-Ion slide-style battery Makita technology delivers category-leading charge time so the battery spends more time working and less time sitting on the charger