iPhone 14 Pro Max review: The battery life champ (for now) | Macworld
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Battery Life - Apple iPhone 4S: Thoroughly Reviewed
iPhone 4 - Wikipedia
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iPhone 4S Battery Life (Real-World Tests): EveryiPhone.com
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About the battery usage on your iPhone, iPad, and iPod touch - Apple Support
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iPhone battery mAh list: Power capacity for every model - 9to5Mac
How to Tell if You Need a New iPhone Battery | PCMag
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
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Apple iPhone 4 specs - PhoneArena
Is an 86% maximum battery capacity bad for a 2-year-old iPhone 6s Plus? Should I replace its battery? - Quora
iPhone 11 battery size confirmed in new regulatory filings - 9to5Mac
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