Wide Compatibility – Works with Dewalt 20V Max AND 60V Flexvolt batteries. 60V Flexvolt Batteries DCB606, DCB609, DCB612, and all Dewalt 60V Flexvolt batteries. 60V Flexvolt 6.0Ah/2.0Ah Compatible. For use with Dewalt 20V Max and 60V Flexvolt lithium-ion batteries only.