I'm trying to decide what is the best option for powering a Pi4. The specs mention for a minimum of 3A. Let's consider we would also like to connect a 2.5" drive to the Pi4. Could someone more experienced with power supplies help me with the following?
How far can we go with a good 2.4A USB charger?
The official power supply is rated 5.1V/3A. Does this mean that this may turn out to be inadequate?
Some 3rd party chargers (e.g. the one discussed here) are rated for 3A in Quick Charge mode. Will the QC mode be activated with RPi4? Or the charger will operate as a regular 2.4A charger?
How can we tell apart 3rd party chargers that would work with RPi4? Are there any of them? I've seen a couple of models mentioning 5V/4.4A output. But I'm afraid this is only the aggregate amperage (they were multi-port USB chargers).