Black and Decker HSV520J01 is a 2-in-1 vacuum (the central part of the stick vacuum can be removed and used as a hand vac) with the highest capacity in its line (18v). Released in 2016, this vacuum can be differentiated from others in its series by its dark gray color and labeled voltage.
Kevin Hoherz your device ais a Black and Decker HSV520J01 ?
by oldturkey03