The DEWALT 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.
Power of corded, the freedom of cordless
9.0 Ah capacity when used in a 20-Volt MAX tool
Compatible with all 20-Volt MAX, 60-Volt MAX and 120-Volt MAX tools