As per my post, mine is a phone, not a tablet. But it's the same OS. As far as the phone is concerned, I get 2 days easily in normal use (lots of browsing), and 3 days if light use. I would estimate it at 1.5-2x longer battery life than an iphone. It's definitely impressive. But again, I can only speak for the BQ Aquaris E5 phone.
