Charging iPhone 3GS in Sweden with adapter that has integrated USB ports

Question

I'll be traveling to Sweden in a few weeks, and I found an adapter that has two integrated USB ports. Both my husband and I have iPhones, 3GS models. If we get this adapter, can we use the USB ports on it to charge our iPhones in Sweden? It doesn't convert voltage.
http://tinyurl.com/25brqp8
Message was edited by: jadzzia

Answer 1

Please excuse me if I write something you already know, but, based on your last message that you are worried because you adapter "doesn't convert voltage," I'll give it a shot anyway.
The voltage that is supplied to your wall outlet is alternating current (AC). In the US and Canada this is 120 volts AC. In Europe - and in many countries around the world - it is 220 volts AC.
A USB port on a computer, or an equivalent USB outlet on an adapter, supplies between 4.75 volts and 5.25 volts direct current (DC). The same kind of power that is supplied by a battery.
The adapter that you mention, that has two USB ports available, DOES convert the voltage from 120 volts AC (or 220 volts AC) to approximately 5 volts DC.
As I mentioned in my first reply, if the adapter can be used for voltages from 110 volts AC to 220 volts AC you will not have any problems in Europe. All that you need to do is to plug it in the wall socket in Sweden and then plug your iPhones into the adapter via the regular sync/power cable that you use all the time. If your adapter is not "universal" - that is, it doesn't have all the plug adapters for European countries you can pick one up online or at a Radio Shack (or similar store) or even at most airport stores. Do a Google search for "Sweden, power outlets" and you can see what the outlets look like.
Good luck,
Mike