Samsung and Apple both released new phones this year that let you enable a setting where it prevents you from charging your phone’s battery beyond 80% to improve its lifespan. How does this work?
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Well… yes and no. Ultimately, you’re not going to see much of a difference between charging “normally” and charging up to 80%. By the time you see battery issues, it’s time for a new device or battery change anyways.
You have to remember that batteries are still a chemical process. The lithium ions are what run your phone. And lithium ion batteries do not like to be fully discharged or fully charged (hence the general consensus of 30%-80%). Basically, when your phone is fully dead, it takes a lot more energy to get it charged than when it already has an existing charge. And when your phone battery reaches towards its max charge, it is much more difficult to actually achieve that 100%. The battery wants to charge and discharge. Sorry if this isn’t the best explanation
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