Hi all. I have an iPad2 and 4S. Is it bad for the iPhone's battery to charge it with the iPad's charger? I've noticed the iPhone gets charged a lot faster with the iPad's charger due to the higher wattage, but I'm wondering if that has any ill effects on the iPhone's battery. What about vice versa? Is it also bad in any way to slowly charge the iPad's battery with the iPhone's charger? Not trying to be lazy. It's just that I don't always have one or the other. Bonus question: Has anyone ever tried a usb hub attached to the iPad charger and had an iPhone and an iPad charging at the same time? I've been wondering if the iPad's charger has enough juice to actually be able to charge both over night although I'm sure it would take longer than usual to charge either one.