Why does charging a phone battery partially instead of fully increase the lifespan of the battery?

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Why is it better to charge a Lithium Polymer battery to 80% (ish) than to 100% every time? I have heard this reduces wear, but why?

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Anonymous 0 Comments

I’d like to ask a follow up question. So when the lifespan of thr battery is done, does that mean the phone can’t turn on for good?

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