The DEWALT 20V MAX* 4.0Ah Compact Lithium-Ion Battery 2-pack (DCB240-2) provides the highest capacity within the DEWALT 20V MAX* compact battery lineup. Using state-of-the-art lithium ion technology, the DCB240 delivers up to one-third more run time while maintaining the same size and weight as the DCB230 20V MAX* 3.0Ah compact battery. Its small size and light weight provide ergonomic benefits for increased tool maneuverability and control for overhead applications. The DCB240 includes fuel gauge LED charge indicator and 3-year limited warranty.