[Q] does energy bypass batery when full charged?

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alete89

Senior Member
Sep 19, 2013
64
9
Buenos Aires
Here is the full question: Does modern smartphones protect the battery making energy bypass baterry when it is full charged? (like most laptops do)
This is related to: is it bad to keep my phone plugged to the wall charged for 15 hours? is it true that doing this makes the baterry go 100%-99%-100% and it "drains" battery's life taking cycles?

Is this the same for all devices? I have a Samsung Galaxy S Advance (i9070)

Thanks!