I bought this a year ago, and I used it a couple of times before setting it aside. I recently found it and could not remember why I didn't like it, so I thought I would give it another shot. I charged it overnight, and this morning I was so excited to vacuum the pet hair off of my loveseat. I only got one and a half cushions vacuumed for it died! I plugged it back up, charged it for 4 hours, and gave it another go. I still was unable to finish the loveseat! It works AMAZING while the battery lasts, but it doesn't last long enough to really vacuum anything substantial. I doubt I could finish my stairs or a car or anything that I would actually want to use this for.