So yesterday I had trouble finding an iphone 4 specific car charger. They all said 3GS, and finally, I came across this. http://www.amazon.com/iPad-USB-Charger-iPhone-CCM®/dp/B003CTDBBQ/ref=pd_ecc_rvi_cart_1 It said it charges the iphone 4, but it also says that it will charge the ipad. Is this too much power for the phone. I felt like I was going to crazy looking at another review on car chargers. I hope I picked the right one. I don't want my iphone to explode. I know it's paranoid, but I thought that someone else here would have a more solid opinion.