Hi Dollar Trifecta:
On your rechargeable battery most of them state the voltage. I have some that state 1.25 volt. If I charge them up and test with a digital meter I will get a reading of 1.37 to 1.39 volt. Assuming your camera uses say for "C" batteries which normally would total 4 times 1.5 volt each (standard batteries) would equal 6 volt. In this case the maximum for the rechargeables would be 4 times 1.39 volt would equal 5.56 volt which is lower than required. Some heavy duty batteries will start out a 1.6 volt each which would total 4 times 1.6 equals 6.4 volt. The higher voltage gives more reserve power which means longer life and more pictures. Another thing that affects battery power is temperature. If you are in a colder climate (especially in later fall months) the batteries do not put out full power as compared to warmer areas. I live in southern Canada and this is the problem I am faced with. As luck would have it, I am using Wildview Cameras with an external 12 volt power supply. There are lots of better, more expensive cameras out there. Which ones have an external power supply I am not sure. Maybe some of the other forum members can help you out there.
I hope this helps. Best of luck.