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Apple Watch Series 4. Battery condition 89%. Any idea as to why does the battery drain so fast? Overnight from 100% to 19%. The watch is rocking the latest os update available
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Apple Watch Series 5 review roundup: Always-on display worth the upgrade, battery life lives up to claim - 9to5Mac
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Is your Apple Watch battery worn and in need of replacing? Here's how to tell without taking it off your wrist | ZDNET
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Apple Watch Series 4 Models Have Nearly 20% Less Battery Capacity Despite Same 'Up to 18 Hours' Battery Life - MacRumors
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