Remember the iPhone battery fiasco about 3-4 years ago? You know, the one where Apple was exposed to deliberately slowing down iPhones as the battery degrades and not notifying users, forcing them to upgrade to a new one? That’s one of the reasons why they added the battery health status to iOS.

The iPhone’s Battery Health Information can be found on the Settings > Battery > Battery Health. It shows a number starting at 100%, and drops as the battery inevitably degrade over time.


It also has a worded report saying if your battery is still in “Peak Performance Capability” or already needs replacing.

The point is to give the user an idea if the performance slowdown they are experiencing is due to the battery. The problem is, the battery status report is apparently not accurate.


Adrian Kingsley-Hughes of ZDNet did the test on his iPhone 13 Pro Max. After owning the device for 104 days, the device’s Battery Cycle Count data reports that it has been through 92 recharge cycles.

As per Apple, the iPhone’s battery can hold 80% of its capacity after 500 full charge cycles.

This means that Hughes’ battery health should be less than 100% by now. However, the battery health info says that it’s still at 100%.

Hughes did some digging and found out that the max full charge capacity of the device is 4,523mAh, which possibly came from the first charge, while the minimum full charge capacity is 4,255mAh, which could be the most recent charge.

This means that the battery has started to degrade. The question is, why is iOS still showing that the battery health is still at 100%.

Hughes explains that a battery’s rated capacity, on an iPhone or not, is theoretical. Some batteries will come with more capacity, while some will have a lot more. “The more capacity there is over the theoretical rated capacity, the longer it takes for the counter to tick from 100 percent to 99 percent. It’s all potluck.”

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