I have determined that my camera battery is the en-en1. When going online to replace it, I am finding that there are many different kinds out there and the one thing that is not the same amongst them is the number of mAh. I am assuming this is battery capacity. My OEM battery has a 650mAh and I am seeing much higher available. Is it ok to get the bigger capacity batteries? Will they too, work in the original charger? I know these are pretty stupid questions, but hey...I am "technically challenged"