I'm sorry, I don't mean this as a personal attack. But to complain about outlets going out on a 90-minute flight seems a bit petty. My experience is that batteries will easily last 90-minutes, give or take. I understand that perhaps some older batteries might die a few minutes earlier, but certainly nowhere near the point where any compensation should be due. It's not like this was a transcontinental flight with no power for 4+ hours. Worse - you even admit it lasted the whole flight and STILL asked for compensation. Why?