it's a standard 6v/3w hub, I've never heard of one that puts out 4,8w that's why I asked, i'm pretty sure I read somewhere about LEDs requiring such low power that a single hub could power more than one headlight if not using a tail light, but I don't have the foggiest idea where I read it or if it even was a true statement. I have no problem using a battery tail light if it allows me extra light up front, some of the new tail lights seem to flash dam near forever on fresh batteries