Nice article. I was about to pull the trigger on the Samsung convertible fast charger wireless pad (EP-PG950), but decided just to wait for the AirPower. Since I have an AW3, I figured the added benefit to being able to charge my watch at work would be handy. I'm guessing, and it's probably a bad assumption, that the AirPower will come with the USB-C adapter and cord to power it, so I am hoping that cost is part of the AirPower's overall cost, as I'm expecting it to be fairly expensive. If that's the case, I'm also hoping that the interface between the USB-C adapter and the AirPower is a USB-C to Lightning cable (although I'm assuming it will be USB-C to USB-C). This would basically give you the option of using wireless charging, or unplugging the AirPower, and fast charging your iPhone...No one has been able to confirm what the connection is on the AirPower side, from the research I've done.
With that in mind, I just opted to buy an Anker PowerPort 2 USB adapter for my travel bag. I thought about investing in USB-C, but it did not make sense, because I would also need a way to charge my AW at the same time, while on travel. I did some tests with the 12W Apple iPad adapter I've had for several years, and it appears to charge around 10W in most cases with my iPhone X. I figure this is a good compromise between fast charging, and preserving overall battery longevity.
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not sure where you are getting your info.
looking at the chart, there is barely any difference between 5W wired and wireless.
the difference between 7.5W wireless and 5W wired is much bigger.
Exactly, when they talk about the "power" of wireless charging, I'm about 95% sure they refer to the "power" being applied to the phone to charge. So while there are inefficiencies in wireless charging, the actual power going into the charging coil is the one that is not talked about. In other words, to get 7.5W on the device side, we may be putting 8W into the primary coil.