The FLEXVOLT 60V MAX 12 in. Double Bevel Sliding Miter Saw is designed with Regenerative Braking Technology to extend runtime with virtually every cut, up to 675 cuts in 3-1/4 in. MDF base molding or up to 255 cuts in pressure treated 4 in. x 4 in. timber, all on only one DEWALT FLEXVOLT DCB609 battery.