The DEWALT FLEXVOLT 20/60V MAX Battery Pack 6.0AH Single Pack is a versatile setup that is compatible with various power tools. The two batteries in this pack are lithium-ion and can output 6 Amps an hour. Use the DEWALT 60V Max tools battery pack to power 20V, 60V, or 120V Max power tools. The Flexvolt batteries will optimize their energy usage for the device you're using them with and will adjust for tools with different voltage. When using this DEWALT lithium-ion rechargeable battery pack you can enjoy the convenience of a cordless tool with the power of a corded tool. The LED battery display means you can check the power level at a glance. A robust plastic construction protects the lithium-ion batteries.