IPhone battery health percentage doesn’t make sense

The percentage of iPhone battery health that declines over time has been proven to be meaningless and a sham as it does not determine the actual battery capacity, a YouTube channel claimed after delving deeper into the process. iPhone battery condition analysis. Apple started showing battery health percentage on iPhone after facing public outrage in 2018 over silently limiting handset performance to mitigate unexpected shutdowns. It has until now been considered one of the aspects of understanding how long an iPhone can be used, without going to a service center.

The video posted by the Payette Forward YouTube channel shows that the iPhone’s battery health percentage, which was introduced with iOS 11.3, is of no real use and is allegedly inaccurate.

It is a known fact that not all batteries have the same capacity. Due to the chemical reactions that take place during power generation, batteries offer varying capacity to users.

But instead of considering the variation, the video shows that Apple takes the rated capacity of iPhone batteries into account when calculating their percentage of health. This is where the conflict emerges.

To detail the difference, the narrator in the video took two iPhone models: the iPhone XS and the iPhone 12 Pro. While the iPhone XS displays 83% of its maximum capacity, the iPhone 12 Pro appears to have 100% of its capacity.

The evolution of the maximum capacity does not indicate the exact age of the batteries on the two iPhone models. On the contrary, the difference just seems to be due to the fact that the iPhone 12 Pro had undergone 97 charge cycles at the time of testing, compared to the 466 charge cycles the iPhone XS experienced.

Why would Apple show 100% battery health on the iPhone 12 Pro despite 97 charge cycles, is another gap, a theory that Payette Forward has a theory for. Apple itself says that “with lithium-ion batteries the capacity decreases slightly with each complete charge cycle.”

Going through iPhone reviews, the narrator suggests that Apple doesn’t consider actual capacity as the basis for calculating battery health percentage and instead uses rated capacity to estimate how much battery life is left on a iPhone. The actual capacity may be higher than the rated capacity in some cases and so you may end up seeing 100% capacity on your iPhone for a while even after completing several charge cycles.

“It’s like filling up your car with gas… it’s all digital now, but with a gas gauge, you would fill it up, and it would go over F, and it would take a while – a lot of gasoline burned to. come back to F, ”says the narrator.

The video was posted in April but has now been reported by ZDNet.

Gadgets 360 has reached out to Apple for comment and will update this space when the company responds.


This week on Orbital, the Gadgets 360 podcast, we discuss the iPhone 13, the new iPad and iPad mini, and the Apple Watch Series 7 – and what they mean for the Indian market. Orbital is available on Apple Podcasts, Google Podcasts, Spotify, Amazon Music, and anywhere you get your podcasts.