Simple, quick question: I have a cigarette lighter car charger that works with my 30-pin 4s. I can't remember what brand it is off the top of my head, but it's black and the USB to 30-pin cable is detachable. My 5s arrives tomorrow. If I replace the USB to 30-pin cable with a Lightning to USB cable, will everything work, or will it not be compatible? Maybe the 5s takes a different power draw than the 4s? Any insights are welcome. Thanks