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EngadgetFeb 20, 2024
Apple says the iPhone 15's battery has double the promised lifespan
Apple has updated the iPhone 15's battery lifespan. The company said on Tuesday its latest iPhones can retain 80 percent of their original charging capacity after 1,000 cycles — double the company's previous estimate — without any new hardware or software updates. Not so coincidentally, the change will arrive in time for upcoming EU regulations that will assign an energy grade for phones' battery longevity.

Before today, Apple's online support documents quoted iPhone batteries as maintaining 80 percent of their original full charge after 500 cycles. But after the company retested long-term battery health in its 2023 smartphones — iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max — it found they can retain 80 percent capacity after at least 1,000 cycles. The company said its support documents will be updated on Tuesday to reflect the new estimate.

Apple says its testing involved charging and draining the batteries 1,000 times under specific conditions and a suite of tests reflecting common uses. As for how the estimate doubled without any physical or software changes, the company attributes the upgrade to continual improvements to its battery components and iOS power management.

For older (pre-2023) iPhones, the original estimate of retaining 80 percent capacity after 500 charge cycles still stands — at least for now. Apple said it's looking into whether older models' estimates need to be updated.


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