Uuummm no cigarette lighter,definitely a non smoking car,I not think I have heard of that,no,have not heard of usb charger,not enough output ,this was a cheap one I got off ebay,I not use a converter with this,I probly should but goes straight in cig lighter thingy and I drive while it charging or be walking home,,if no cigarette lighter in your car you could use converter with aligator clips on end so can clip on your battery but sure car needs to run , I can't see 12 volt fully charge a 5870mah 15.2volt batt while not idling or driving,,they are handy but I fully charged all at home,it's just a back up for me