As a hobbyist, you no longer need to push 3 A through tiny MicroUSB connectors and underspecced cables to power a current-hungry Pi 4. Today, all you need is a USB-C socket with two resistors ...

A device that transfers power to smartphones, tablets and myriad portable devices. USB chargers plug into an AC outlet and provide a USB Type A or Type C socket to cable DC power to the device.

USB-C charging from a 12V socket Some newer 12V chargers also offer ... as a faulty charger could cause too much power to be sent to your phone, either at the wrong voltage, wattage or amperage.