Kuaikeji (Fast Tech) News, October 6: Adrian Kingsley-Hughes, a seasoned contributing editor at the renowned tech media outlet ZDNet, recently shared his findings in a blog post. After conducting an extensive 18-month experiment with Apple's so-called 'optimal charging method' on an iPhone 15 Pro Max, he concluded that persistently capping the charge at 80% is 'not a justifiable trade-off' when considering its real-world effectiveness.

Apple has officially claimed that the iPhone 15 series and later models should maintain at least 80% of their original battery capacity after undergoing 1,000 charging cycles. Since purchasing his iPhone 15 Pro Max in September 2023, Hughes has meticulously adhered to the 80% charging limit. However, after one year of this regimen, he observed that the maximum battery capacity had dwindled to 91%. By the 17th month, it had further plummeted to 89%, accompanied by a discernible decline in battery life performance.

This observation aligns with the findings from MacRumors' battery life test on the iPhone 16 Pro Max, which also suggests that the protective benefits of this charging feature are limited within a one-year timeframe. When taking into account the daily charging habits of typical users, imposing an 80% charging limit may actually require more frequent recharging sessions. This, in turn, could potentially detract from the overall user experience, making it a less-than-ideal solution for many.