Apple's new Smart Battery Case fits an iPhone X, but charging requires iOS 12.1.3
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Apple introduces new $129 battery case for iPhone XS, XS Max and XR
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Apple's new Smart Battery Cases sport larger capacity than previous versions
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A Review of the iPhone XS Max Smart Battery Case – The Sweet Setup
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A Review of the iPhone XS Max Smart Battery Case – The Sweet Setup
Smart Battery Case Replacement Program for iPhone XS, iPhone XS Max, and iPhone XR - Apple Support
The best iPhone XS and iPhone XS Max battery cases | AppleInsider
Exclusive: First look at unreleased Apple Smart Battery Case for iPhone XS, three models and 2018 release possible - 9to5Mac
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Apple's new Smart Battery Cases sport larger capacity than previous versions