iPhone 15's secret charging trick

Find out how to use the device as a battery pack!

The other day while on a long bicycle ride, my AirPods ran out of juice — Adaptive Noise Control can really suck the batteries dry. (No, please don’t ride your bike with AirPods like an idiot the way I do.)

Because I’d forgotten to charge the AirPods case for a while, it was totally dead, too, so I had no hope of resurrecting the earbuds until I got home.

But then I remembered I had an iPhone 15 Pro — problem solved!

I always carry one of these great InCharge X charging cables. Usually, it’s on my keychain, but that day I had it in my jersey pocket.

I selected USB-C at one end, Lightning at the other, and plugged my dead AirPods case into my iPhone 15 Pro — boom! The charging case’s light came on, and soon I had enough juice in my AirPods to get me home with music in my ears.

The iPhone’s ability to charge other devices is new, and easily forgotten, but here’s all you need to know, including info about passthrough charging, which is great if you have only one charger and multiple devices.

Also in today’s newsletter:

— Leander Kahney, EIC.

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One more thing ...

All of my working-class parents’ savings were being spent on my college tuition. I had no idea what I wanted to do with my life and no idea how college was going to help me figure it out. And here I was spending all of the money my parents had saved their entire life. So I decided to drop out and trust that it would all work out OK.

— Steve Jobs, 2011.

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