The DCB609-2 20V/60V FLEXVOLT Lithium Ion batteries come in a double pack and are compatible with all 20V MAX, 60V MAX, and 120V MAX toolsFeatures 180 Watt Hours of energy in each battery pack (360 Watt Hours combined) 9.0 Ah capacity when used in a 20V MAX* tool Compatible with all 20V MAX*, 60V MAX* and 120V MAX* tools 6X the runtime compared to DCB201 1.5Ah Battery LED State of Charge DisplaySpecifications Application: Power Tools Voltage: 20V