I am a big fan of NiMH batteries. I have used them for digital cameras for years. The best for tough uses like cameras and flashes are Panasonic eneloop pros and are preferred most camera users. Do a search of photo or camera sites and read about all the raves. Enleloop pros cost more of coarse but I find them worth it. I never have had a NiMH battery leak in over 12 years running some. I have given up using any alkaline batteries as they often leak . I have no need for cameras with special built in re-chargable batteries as they are more expensive and not available if you need a battery change on the go. I probably would not spend the extra money for eneloop pros for train controllers but would definitely use NiMH batteries if their low voltage would work. I use cheaper NiMH batteries in several portable am and fm radios, both AA and AAA.
I would love to use NiMH batteries in my Cox cable TV controllers but they are only 1.2 volts when fully charged. The Cox controllers have to have 1.4 to 1.5 volts or they quit.
Charlie
