amperage

I've been searching for a chart that converts battery voltage into a percentage, and have found some for 48v. But it doesn't show what Ah the chart is for. So I'm wondering if there's any difference in voltage between two 48v batteries that have different Ah? I have a Yonglin 80c display where...

I'm looking for the Evo cross from BH. Can someone give me here a tip for a good lighting type or better yet, does anyone know the exact power values that provides the System for the lighting. I am particularly concerned with the amperage. I have been two different information get, 500, the...