The Ryobi Backpack Sprayer/Roller is the first cordless model on the market, so paint projects have no limits. The container holds 1.5 gallons of paint comfortably on your back. Think of the time savings by not having to return to your paint source for frequent refills. FLUID Technology keeps fresh paint flowing constantly between the sprayer or roller and the paint source so clogging or splattering is a non-issue. (Battery and Charger Not Included)