Review on 🚗 Powerful and Versatile Car Charger with 2 Sockets, QC3.0+5V 2.4A Dual USB, Switchable Voltage Display - Ideal for iPhone, iPad, and Android Devices! by Tommy Russo

Works as expected. Lots of features in a small package at a small price. Very important. Note that the display shows voltage when no USB devices are drawing power. When USB devices pull, the display alternates between volts and amps. I'm pretty sure the amps display only shows the amps on the USB 5V side and not the 12V pass-through cigarette lighter plug. For my purposes it would be even better to measure the current on the 12V side including all loads, but others may feel differently. I don't know if the problem is with the radio plug, this outlet, or both. That's enough for my purposes. I used the USB port to charge the iPhone, no problem. I don't have any devices that support QC 3.0 so I can't rate it but I hope it will come in handy one day.