I have been using it for a month for 1-2 hours every day mainly reading. Still have not charged since bought it and the battery was at 95% when I received it. I love this reader. The size is perfect to read Manga and Books and the weight and thickness are just right. I can hold it with one hand while reading in the bed even for couple of hours without feeling fatigued. I was thinking in buying the Kindle but I also wanted to use Dropbox to get books on the go from the cloud and borrow books from the local library. The Android system made all this possible and more.... I also downloaded some card games from the google store and they work like a charm...This e-reader was an amazing investment. I had to buy one second hand as it is out of market now and replaced by the Nova Air which is silver, a little thinner but it has a smaller battery.I wanted a black device and the bigger battery is really good to have so fund a Nova 3 second hand. You will not be disappointed with this device. 5 stars!