18V LXT® Lithium‑Ion Battery and Rapid Optimum Charger Starter Pack (5.0Ah) EFFICIENCY : 18V LXT® Lithium-Ion 5.0Ah battery reaches a full charge in 45 minutes or less CONVENIENCE : Integrated L.E.D. battery charge level indicator allows user to monitor battery charge TECHNOLOGY : STAR Protection Computer Controls™ protect against overloading, over-discharging and overheating RUN TIME : Provides up to 35% more run time per charge compared to BL1840 INCLUDES : 2ea. BL1850B battery, DC18RC charger