Apple's iPhone XS, XS Max, and XR battery cases are already discounted on Amazon
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Smart Battery cases for the iPhone are over half off at Best Buy - The Verge
Apple Smart Battery Case for iPhone XS, XS Max and XR Gets a $11 Discount Today Straight from Amazon
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Apple Smart Battery Case review: Doubling down XR, XS, and XS Max battery life | CNN Underscored
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iPhone XR smart battery case review: Effective but you don't need it for this iPhone - Technology News
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