The device is backed by a 3,000 mAh battery with no quick charge but is equipped with an intelligent power saving feature. (dealntech.com)
You can stretch that, and coupled with power saving features, can even squeeze more than that! (androidauthority.com)
From here you can see how much juice you've got left, which apps are burning the most battery, and enable power saving features like dimming and theater mode. (digitaltrends.com)