Purchased a year ago and already need to replace it. I wish I had listened to other reviewers on the battery life. If you're reading 5 star reviews, it may be because the reviewer hasn't owned this vacuum for very long.... At first it I thought it worked great, and would have gladly given it 5 stars. It was nice having 2 batteries for longer jobs. Over time the batteries held less and less charge. It would be so that after only 5 minutes I'd have to replace the battery with the other one in the charger. I every time I vacuumed I'd run the battery out and it would charge for at least 12 hours before using again. Today was it's last vacuum. The battery in the vacuum died quickly so I went to  replace it with the one in the charger and that too died within 30 seconds.... Switching back to a corded vacuum with an extension cord.