When your battery dies

When your batteries die when your doing something is the worse thing to happen. Especially if the thing your doing doesn't have an auto save after every couple of minutes. We've all been through that irritating BS I was going through on my PS Vita yesterday and I got 90% done for a new game I purchased and when I got back on it was at 50% I was so mad. It happens though this thread is about any battery dieing.

So what's the worse moment a battery died on you?
The most embrassing most my battery died is when I was recording. I waas on 20% but my battery is very unpredictable. It was snowing a couple of weeks ago, a couple of inches deep and a lorrery got stuck going up a hill and I was recording the situation and then my phone died. It died at the best part because then the police arrived to intervene