How does the power work?

Does the phone get unlimited charge until the case runs out or does the case charge until it runs out then uses iPhone power?

iPhone XS Max Smart Battery Case - White

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2 Answers from the Community

  • Apple Responds

    You can charge your iPhone and battery case simultaneously for increased talk time of up to 37 hours, Internet use of up to 20 hours, and even longer audio and video playback.

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  • it starts at the wall (if you want), goes through the AC Adapter (the little power brick), then through the lightning cable, into the case where it then proceeds to enter and charge the battery in both the iPhone and the case battery. So when you disconnect the charger it doesn't give it unlimited battery (though that would be awesome!) but gives you talk time up to 37 hours, browsing the internet for 20 hours, and video playback for 25 hours (still pretty impressive.)

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