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A device which controls the voltage and current being delivered to a capacitor or battery.

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Can a more powerful charger burn something? [duplicate]

I am told that I must use 5V, 1A charger to charge power bank. If I will use 5V, 2A charger then will it burn power bank? Is that possible? … \$I = V / R\$ Charger give constant voltage and current depends on resistance. That is why I think only Voltage is important and charger must be able to give enough current. …
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