They had a huge range of battery life results. There are plenty of mixed results on battery life in this forum. I have experienced a big variance in battery life too. I have noticed, using apps with TB support drains battery faster than using apps that do not. I do not believe it to be the OLED strip, but maybe something else is working in the background? I have gotten anywhere from 7-8 hours to 13-14 hours. The dip is usually when I am using the TB and TB apps. Thoughts?