DeWalt DCB118X1 20/60V Max FLEXVOLT Lithium-Ion 9.0Ah Battery Pack with Fan-Cooled Charger

The DEWALT DCB118X1 includes a 9.0 Amp Hour FLEXVOLT Battery Pack and DCB118 Fast Charger. The DCB609Y FLEXVOLT Battery pack changes voltage when you change tools. It Powers a new line of 60-Volt MAX Brushless tools and 120-Volt MAX Brushless tools. This pack is also backwards compatible with 20-Volt MAX tools and chargers.