Dell Venue 11 Pro (7130) ridiculous battery drain

Hi,

I have got a Venue 11 Pro with the i3 model. The thing is the battery consumption is ridiculous: it's like a 3% every 2 minutes just using internet explorer (visiting reddit). I bought a brand new battery from your webpage but it seems to behave like the last one. My chinese tablet is way much more optimized than this one (having roughly the same specs), and I don't know how is that possible. I just formated the machine and installed a fresh Windows 10 version to compare the consumption before and after: it's just the same. It looks like this tablet is not optimized at all in that regard.

VP11 owners, is your tablet a battery drainer as well? Or it's just mine?

Thanks!