PD = USB-C Power Delivery. The 20 watt one in the Apple Store is PD but there are many with the same technology so even let’s say Anker or Spigen USB-C PD charging brick works.

I use apples 20 watt brick on my past 4 iPhones. It’s 0-80 in about 40-50 minutes or so then the last 20% trickles for about an hour to hour and a half till 100%.

What is your website tinting set to on each one?

You’d have to make sure you opt for AppleCare+ Theft and Loss to cover theft or loss.

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