It really happened! Battery dead... :-(

I really managed to come across the number one of unwanted situations for photographers today: Battery dead when "the show" is rolling! For the past two days it has been pouring rain (reminded me a bit of Vancouver ... ;-)), but late this afternoon the rain took a break here and there and the sun peeped occasionally. So I jumped at the opportunity, took my bike, my camera and a little time and headed for my preferred shooting spot down by the lake (Woerthsee). I was lucky: Only one photographer besides me, so I had the place to myself and was able to pick just about any spot I wanted. Clouds were racing, you could tell that a storm had just come through and in the distance there was a promising bright glow in the sky, which I hoped to make way for the sun to come out fully. So I prepared myself, set up my gear, took a few rehearsal shots and got ready for the big racket which I felt would be going on any minute. And then - the clouds parted and an intense beam of light dipped the entire area into the most surreal and not-from-this-earth light I have ever seen! Even some of my Canada shots can't match the conditions tonight. So I pointed the lens into the light, switch the power on and - ... find myself presented with the "Change battery pack" message on the display! Arrrrggggggggghhhhhhhhhhhh- whoooooowaaaaaaaaaaaaaaaaeeeeeeeiiiiiiiieeeeeeeeeeee! Un-effing-believable! In my defense I must add that I usually check battery power before taking off and in my camera bag there's always an additional battery. However, taking the camera bag when riding the bike makes for uncomfortable and unsafe maneuvering, so I prefer the backpack and tend not to move all items from one bag to the other... Well, I guess in the future I will move everything, so I won't ever encounter a similar situation... (and I wanted to try my first bracketing shots and some HDR processing later on... :-( )