The unfortunate capability of the impulse is that it's very easy to turn on and very easy to get turned on in your camera bag and drain the battery leaving you with a sorry sounding, clicking camera which doesn't take pictures with 5 precious frames of $2 a pop 600 film sitting in there feeling neglected. I don't want it to go to waste. I'm thinking removing the film in a dark bag and retrofitting the camera to accept an external power supply of some sort. Has it been done? Any tips?