Powerseries ™ extreme 36v is equipped with a removable lithium battery compatible with black + decker's 36v garden products. guarantees up to 78 minutes on a single charge and is designed to clean large spaces quickly, easily and efficiently. the innovative anti-tangle brush offers a deep and powerful cleaning while minimizing the risk of tangling of hair and dander. the three-speed settings allow you to vary the suction power to suit the cleaning job to be done. the high-speed setting allows deep cleaning even on the carpet. the container has a high capacity, it is easy to empty with a simple click without coming into contact with dust and dirt.