DW 20/60V Max FlexVolt Battery

DeWalt 20V-60V MAX FLEXVOLT DCB612 12 Ah Lithium-Ion High Capacity Battery Pack 1 pc

The Flexvolt 12.0 Ah Battery provides up to 8X runtime in 20V MAX and delivers ultimate power in 60V MAX and 120V MAX cordless tools. It changes voltage when you go from 20V MAX to 60V MAX tools. Lithium Ion technology delivers performance in the same size as our 9.0 Ah Battery, so it is more powerful in as compact a package as possible. It also includes a built-in LED Fuel Gauge for instant charge status, and is compatible with 20V MAX tools and chargers.
Ultimate run time with 12 amp hours and 240 watt hours
Unrivaled power - 60V MAX high-power efficiency
Ergonomically advanced - same size and weight as the DCB609 (9 AH)
Operates in outside temperatures down to 0 deg. F
3-LED fuel gauge charge indicator