My battery capacity is at 90% now
Hi there ,
i have an iPhone 13 Pro Max but I have noticed that my battery is draining fairly quickly.
how can I increase the capacity ?
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Best reply
The capacity decreases over time and use of the iPhone.
If it drops beneath 80%, Apple recommends, that you'll have to get the battery replaced.
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Your battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers a battery service. Prices and terms may vary.
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copied from: Batteries - Service and Recycling - Apple
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