How does fast charge actually work? Why was this never introduced before?
In: Technology
standard chargers works at 5V and up to 2A for most phones. fast charge uses 9V and up to 2A for most phones. the amount of “power” transferred is the V * A. So by using a higher voltage, it charges faster. this requires a more complex circuit, so it’s more expensive. and charging faster always has the potential to wear out your battery faster than charging slower.
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