Evaluating the Long-Term Effects of iPhone Charging Habits on Battery Health

Adrian Kingsley-Hughes tested the longevity of his iPhone 15 Pro Max battery by limiting charging to 80% for over a year, but found that battery capacity and performance declined significantly, leading him to revert to full 100% charging and optimized battery charging to extend battery life. The experiment highlights the challenges of balancing battery health with daily usability, and suggests that limiting charge levels may not always be beneficial for long-term battery health.