Nikon DS1 battery and Canon Servo EE Finder Power
I've recently found several fantastic deals on some Nikon DS1 EE auto exposure units. But of course, there's a catch. None of them come with batteries or any kind of cable to connect it to an external power source. Are there any alternative battery options for these? or do you need to buy the original battery + charger.
I've also had my eyes on the canon servo finder for the canon F1 for a while. I can find good condition examples that even have the linkage part but they never ever have the cable that connects them to the MF grip or even the external power source unless they are packaged with a whole camera. Have any of you tried powering this or a similar accessory with something like a external power source or tried making your own power cable?