"The battery in my 15 Pro Max was awful after 18 months of use. I did everything Apple suggested to keep it in tip-top condition. I'm going back to 100% charging with the iPhone 17 Pro Max."
"When I got my iPhone 15 Pro Max in September 2023, I decided that I'd do everything I could to make the battery last. Well, an accident destroyed that handset, so I restarted the experiment in March 2024. CNET: iPhone Battery Showdown: 3 Years of Data Show How the iPhone 17 Models Measure Up I wanted to see just how much lifespan I could get out of the battery."
"In my experience, no topic generates more articles, blog posts, and YouTube videos than how to get the best possible battery life from your iPhone, both daily runtime and overall lifespan. Once Apple even added a feature that allowed users to cap battery charge levels to prolong the lifespan of their battery. But if every minute of runtime, every percentage point of battery life matters, does it make sense to sacrifice 20% -- or, to put that another way, one-fifth -- of your battery's capacity? It seems the temptation of the iPhone lasting longer makes the tradeoff worth it. After all, that iPhone 15 models and later can "retain 80% of their original capacity at 1,000 complete charge cycles under ideal conditions." I was curious as to what "under ideal conditions" meant, but I was determined to give my battery the best chance possible."
The iPhone 15 Pro Max battery performed poorly after 18 months despite strict adherence to Apple's battery-preserving suggestions. An accidental device loss prompted restarting the preservation experiment in March 2024. Consumer focus on maximizing daily runtime and long-term battery lifespan drives many tweaks and scrutiny of iOS battery metrics. Apple added a feature to cap maximum charge level to prolong battery life. Sacrificing roughly 20% of maximum charge raises questions about practicality versus longevity. Apple states iPhone 15 and later can "retain 80% of their original capacity at 1,000 complete charge cycles under ideal conditions." The user returned to charging to 100% with the iPhone 17 Pro Max.
Read at ZDNET
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