Have you checked the box the camera came in? The pile of other chargers you have for mobile phones? Your very safe place where you put all important things so you know where they will be?/(that's the fatal one, you never remember the very safe place!:$ . Can you think back to when you last used it, you may just remember what you have done with it. Failing that, buy a new one, bet they are not too expensive- and when you have done that, the old one will miraculously reappear, somewhere you have probably looked at several times already :-)