Aukey® USB Cigarette Lighter Charger 4-Port, mobile car charger, 48W / 9.6A (2.4A * 4) equipped with the technology AIPowerTM for iPhone, iPad, smartphone, tablet and Samsung Android devices (9.6A Black) (Electronics )
good practice at great drive; one can connect the GPS, mobile phone and other devices even 2! I warn that just disconnect the fairly regularly as the charger tends to become very hot, which is normal, I think.