I don't bother with "car chargers". I use a 150w DC to AC inverter, plugged into the car's lighter socket. This gives me 1 x AC power outlet that I can plug any appliance into provided it operates within the limits of the inverter (150w and max of 4amps 'burst'...and less continuous). I use this to charge phones, laptops, batteries generally / drive small stereos & TVs - whatever. Much more flexible. You just use the regular AC charger and plug it into this unit. I paid NZ$69 for it, so they must be about US$45? Saves buying 101 different 'car chargers'.