Does limiting iPhone charging to 80% extend battery life? [Video]

Both the iPhone 16 and the iPhone 15 before it offer the option to limit charging to 80% rather than 100%. The thinking is that many people don’t need the full battery capacity of the device in a typical day, and it reduces wear on the battery, extending its life.

But is the theory backed up by real-world results? A sister site of Macworld decided to collect some data and carry out a statistical analysis to find out …

If you were to take a guess as to the country involved in these statistical calculations, let’s just say the odds are in your favor.

German sister site Macwelt asked Facebook users to share screengrabs to show their battery health and to determine whether they charged to 80% or 100%. Data was only collected from iPhone 15 users to ensure there was a year’s worth of usage.

They graphed the results, which appeared to show that battery …