Make sure this fitsby entering your model number. 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 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)