The DCB240 20 V MAX* 4 Ah compact lithium-ion battery provides the highest capacity within the DEWALT®20 V 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 20 V MAX* 3 Ah compact battery. Its small size and lightweight provide ergonomic benefits for increased tool maneuverability and control for overhead applications. The DCB240 includes a fuel gauge LED charge indicator.