What's the mA Charging Requirement for 2nd Generation? What is the maximum?

It appears that the minimum charging requirement for the 2nd generation is 500ma and the optimum is 1000ma (1A). Can anyone confirm that for me? I can't find any specifications anywhere.
Also, will using a high power USB charger cause any harm to the Touch's charging circuit? I can pick up a USB charger (which is part of an international power adapter kit) that has a rating of 2.5A.
It would be a great way to charge the Touch assuming that it doesn't cause any damage, and the only reason I'm considering it is that it's 70% off at the Circuit City clearance. (R.I.P. CC)
Thanks.

The spec for USB 2.0 high power is a minimum of 500mA.
Also, will using a high power USB charger cause any harm to the Touch's charging circuit?
No.
Electronic devices will only take what current they need.
As an example, the outlets in your house are 15 Amps but none of your electronics draw anywhere near that amount.

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What's the mA Charging Requirement for 2nd Generation? What is the maximum?

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