Just got my a2109 for my birthday!! Girlfriend surprised me, was amazing. This is my first android tablet and want to make sure I get the best out of it. Just a few questions, thank you. Enable Balanced Power? What is this and should I have it on? Whats the best way to get the most of the battery? Keep wifi on and brightness @ 50%? Thank you guys, appreciate all the information you provide for this little gem.