20 volt max fan cooled fast charger is compatible with 20 volt max batteries and the new 20v/60v max battery. The fan assisted cooling results in faster charge times and reduced downtime in the field. Charges a DCB606 Flex Volt battery in 60 minutes. Internal fan pulls air across the battery to cool and reduce hot/cold pack delays. The charge rate is 8 ampsfor premium batteries and 4 amps for compact batteries.