I purchased 2 (TWO) of these because I liked the first one so much. Great power. Easy enough to clean, etc. I am disappointed because Lithium batteries should have a longer lifespan. After 2.5 years of random (light) usage the batteries no longer hold a charge. I can vacuum for about 1 minute before they die. They sit on their base charging 24/7. So I assume the electronics inside know how to keep the battery properly charged without fading. But I guess the cells only last so long. I like the vacuum so I am contemplating buying another one, but I'm torn because I know it will only last 2-3 years even if I keep it in good condition. Maybe it's better to invest in another brand...or maybe not. Hmmm...