The battery life of this Mediatek k19 seems fair. I did a practical test as follows: Watched a movie via bluetooth with the wifi on, then kept listening to music via bluetooth. Had the wifi on the whole time and did some browsing and emailing. All the time in flight mode. I used Battery Life Timer found on Google Play to time how long it takes for a charge to drain from 100% to 15% and got 7 Hours:
Rooting this tablet was not an easy task. The majority of rooting software available simply will not root it. Eventually I found vroot to work for me.