The DCB124-2 includes two 12V MAX* 3Ah lithium ion batteries that provide additional run time for DEWALT 12V MAX* tools, with 50% more capacity than the DCB122 2Ah battery. The DCB124 includes the Fuel Gauge LED charge indicator, making it easy to check that your battery is ready for the job. DCB124 is compatible with all DEWALT 12V MAX* tools, and includes 2-year limited warranty.