Accessories Single/Dual USB Car Charger Voltage?

[dkaufman1]

Not to thread spam - but I think this is a good question....

I saw a friend with an iPhone car adapter. It was a car adapter with a USB female plug. He grabbed his USB charging cable and could charge his iPhone.

I wondered what the G1's tolerance is for this. Most single and dual usb car charger adapters are for iPods and iPhones (as they have the lion's share.) Can this work safely with a G1?

And more so, I want a dual usb adapter (2 female plugs).

I originally posted this here -http://androidforums.com/t-mobile-g1/6262-can-i-use-charger.html#post38629