Everything you wanted to know about charging your iPhone or iPad ...

Source, Voltage, Current, Power. PC USB, 5 volts, 0.5 amps, 2.5 Watts. iPhone Charger, 5 volts, 1.0 amps, 5 Watts. iPad Charger, 5.1 volts, 2.1 amps, 12 watts ...

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