The DEWALT 60V Max Flexvolt 12Ah 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 DEWALT 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.Features 12.0 Ah capacity for maximum runtime Compatible with 20V MAX*, 60V MAX*, and 120V MAX* tools Compatible with all 20V MAX* Chargers 3-LED Fuel Gauge charge indicator Operates in outside temperatures down to 0°F Specifications Blade Length: 20/60