USB 2.0 Power?

Dell Latitude
March 30, 2006 at 14:30:12
Specs: Win Xp Pro, 866mhz/512
Hello There,
Anyone knows how much power a USB port 2.0 provide? Acutelly I want to make a AC charger for my iPod. It comes with a cable which charge it through computer which is annoying for me? Tell me how much power a USB port provide so I can attach that power with the cable. Thank you

PS: Forgive on my English, it's terrible as it's not my tongue language :(

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March 30, 2006 at 14:52:29
I think it's the same as for USB 1.x ports - each USB port on the computer is 5 volts D.C. up to a maximum of .5 amps (1/2 amp; 500ma) - the iPod may not need that much amperage.
You can get already made up A.C. charging adapters for iPods - both official more expensive Apple brand ones, and cheaper clones - they plug right into the iPod's USB port I think.

If you make your own, you may have problems - the computer voltage is regulated (made accurate) to 5 volts + or - 10% or less - a cheap 5v dc adapter is not regulated, the voltage can go higher than that, and that higher voltage will damage the battery.

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