How do electronics like computers and phones know when to stop charging?

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What is the actual mechanism (or circuitry, I presume) that allows a computer to stop drawing power from the charger?

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4 Answers

Anonymous 0 Comments

The battery can only be charged when the charging voltage is higher than that of the battery itself.

The charging voltage is capped, therefore the charge eventually slows down and comes to zero current when the voltage of the battery is equal of the charging voltage.

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