Makita BL1850B-2 18V LXT Lithium-Ion 5.0Ah Battery Twin Pack Integrated L.E.D. battery charge level indicator allows user to monitor battery charge Provides up to 65% more run time per charge compared to BL1830 Reaches full charge in 45 minutes or less Compatible with 18V LXT Tools Battery delivers consistent power and run time in extreme temperatures, even in winter (-4degreeF/-20degreeC)