While the batteries now a days charge from 0 to 50 in like 5 to 10 minutes, it almost takes twice as long to charge from that point 100%.
Why?
In: Technology
First of all the energy % level is hard to actually measure for most batteries, and your phone estimates how full it really is. How this estimation is done makes a big difference for this.
Also the fuller a battery is the harder it gets to fill it further because less material to react is left, and the “force to decharge it” gets stronger.
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