I
‘ve always been a bit on the fence when it comes to wireless charging. The wireless charger itself still needs to be plugged in with a wire.
Back in October I ended up buying a Samsung wireless charger when I upgraded phones. I ended up using it a bit, but generally found that it was more desirable to physically plug my phone in at home in order to take advantage of the super fast wired Samsung charging. The wireless charging process was not as fast and therefore not as convenient when needing to give the phone a quick 10 or 15 minute juice-up.
So, the wireless charger mostly sat unused.
Recently I bought a new car, a 2017 Toyota Yaris iA. The new car has a space in front of the gear shift in the mid center stack perfect for a large phone that includes USB and a 12-volt power socket. I found myself wondering if I plugged the Samsung wireless charger into a 2.1 amp-12 volt power source, would the wireless charger work properly or not.
I experimented and found that the wireless charger works perfectly well with a 2.1 amp 12-volt power source. The next steps were easy. I used a quantity of the rubber grip mat stuff to make the forward slanted phone area flat, and plugged in the Samsung wireless charger. Since the 12-volt socket only has power when the car’s ignition is turned on, I can simply leave the 12-volt charger plugged in all the time just as if it were in my house connected to an AC power source without fear of it running down the car’s battery.
When I get in the car, I simply lay the phone 
on the Samsung wireless charger and as soon as the ignition comes on while I’m driving the phone is charging without me having to futz around with plugging wires in. Also, the phone connects to the car’s audio system via stereo Bluetooth, making for a 100% seamless experience.
My conclusion is that wireless charging is most useful in an automotive environment, provided that there’s a flat, convenient area for the wireless charger to rest and the power socket is tied to the car’s ignition.