FlyerTalk Forums - View Single Post - Charging an iPhone with 220 Volts

Mar 18, 2015 | 7:13 am

#10

nux

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Join Date: Jun 2012

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Posts: 12,551

Quote:

Originally Posted by lhrsfo

The real issue is that some items seem to take forever to charge in the USA because it has such low voltage.

The Apple iPhone charger is a SMPS (like almost all consumer mains to DC power supplies), so as long as the input voltage is within range it will output and charge exactly the same. The current drawn from the mains supply is very low.

At 100VAC it will draw ~0.05A to deliver 1A at 5VDC.
At 240VAC it will draw ~0.02A to deliver 1A at 5VDC.

Some generic USB chargers will only provide 2.5W (0.5A at 5VDC) and so will charge slower than an Apple 5W (1A at 5VDC) charger.
More recent iPhones will charge faster using an iPad 10W charger.

Again, this is independent of the input voltage.

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