Compact, 4 Point 0 Ah, Dewalt 20V Max* Battery (Dcb240). The DCB240 20V MAX* 4Ah compact lithium ion battery 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* 3Ah compact battery. Its small size and light weight provide ergonomic benefits for increased tool maneuverability and control for overhead applications. The DCB240 DEWALT 20V MAX* Battery includes a fuel gauge LED charge indicator and 3-year limited warranty. 4 Amp hour (80 Watt hour) capacity provides extended runtime for the DEWALT 20V battery DEWALT battery has the same size and weight as DCB230 20V MAX* compact 3Ah battery Lighter weight with same capacity as DCB204 4Ah battery compatible with 20V MAX* tools and chargers Includes fuel gauge 3-LED charge indicator