question about Chroma battery replacement

I need to replace my chroma battery, I was going to use a off brand and wire it myself. My question is what C rating do I need? I get its an 11.1v 6300mAh, but what C rating needs to be used? I see the gifi clones are 15c, does anyone know what the stock chroma batteries are? Would a 45 or 60c be too much? Any input would be greatly appreciated. TY