I’ve had several phones with fast charging. They’re amazing. You can charge your phone over 60% in 40 minutes. But why do they slow down so much when it comes to bring a phone to full charge?
In: Technology
Basically when charging a battery electricity is forcing ions from one side of the battery to the other. When a battery is low there’s lots of empty space to shove those ions and the flow over easily. When it’s closer to full the space is filled up and the new ions have to crowd in around the older ions shoving them about to get tightly packed. All the shoving generates heat so at later stages of charge you need to slow down or you risk heating up the battery and damaging it.
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