THE DUAL-VOLTAGE 20 V/ 60 V MAX FLEXVOLT® 9.0 AH BATTERY AUTOMATICALLY CHANGES VOLTAGE WHEN YOU CHANGE TOOLS PROVIDING UP TO 6X RUNTIME IN 20 V MAX TOOLS AND THE POWER OF CORDED IN 60 V MAX AND 120 V MAX TOOLS. TAKE ON TOUGH JOBS WITH THIS BATTERY BECAUSE PATENTED TECHNOLOGY AND LARGE FORMAT CELLS MEAN IT RUNS COOLER THAN THE LEADING COMPETITOR 9.0 AH BATTERY PACK UNDER A CONSTANT DISCHARGE. THIS IS THE BATTERY FOR FLEXVOLT® POWER AND LONG RUNTIME. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov -