I be look for a cordless small hand vac . I currently have a roomba , which I love , but there be some place it do not reach . this complement the roomba . I also buy it because of the dog hair on my furniture . I have a Kenmore upright vacuum , its great for clean the floor , but the extenion and furniture attachment be useless on the dog hair . I have 3 dog , all with short hair , but I swear , it be all barb on one end and become embedded in the furniture . this work great for the hair , it have this rubber attachment that grab the hair and suck it up . I use the brush for vacuum the radiator in the house and get the dust off of the back of the tv . I have not have a problem with the battery go dead before I be do . I usually use it for 15 minute . by that time , the small collection bin be full . if I be vacuum hair , the bin be fill withing 5 mintue and I have to empty it , but it be not a big deal . what you have to realize be this be for touch up and small job . it do not replace a standard vacuum , it be not for that ! if you need to use it more than 15 minute , you probably need to be use you standard vacuum . I think black and Decker do a good job on this . it will be interesting to see how long the battery last .