18V Compact Lithium-Ion 2.0 Ah Battery Integrated LED battery charge level indicator allows user to monitor battery charge. Provides up to 50% more run time per charge compared to BL1815. Reaches full charge within 25 minutes. 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. Star Protection Computer Controls™ protects against overloading, over-discharging and over-heating. Impact- 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. Battery resists self-discharge and remains ready for use even after long periods of storage. Makita technology delivers category-leading charge time so the battery spends more time working (charger not included) BL1820B Yes -