.... sort of. I have the Scala G4 Wireless headsets that require charging, by definition. The units come with a 110v (120v ) wall charger plug base along with a plug in cord which can also be plugged into a USB computer port for charging. The wall charger base reads on the back label " Output 5.0 Volts @ 1.0 A " . I have a car charger power plug adapter with a USB connection cable that is rated at " Output 5.0 Volts @ 2.0A.". There is a 1A difference between my car charger and the Scala G4 wall charger. I'm not an electrical engineer, I'm a Garage Door mechanic. Is the 1A difference in output irrelevant ?