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Originally Posted by JakeRich
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1. But experience says the battery level is a factor in the power draw, so all answers will regard the battery level.
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Guys to help answer this question I am going to pull my multimeter out of the closet that can attach to the computer and check the actual current during charging. I will do this with the axim off and the battery discharged to the point of the axim turning off. One thing a lot of people seem to forget though is there are two differant batterys a 1100mAh and a 2200mAh. I would not be surprised if the 2200 requires a larger current during charging but we will find out.
The first tests will be done using the original voltage of the power adapter which is 5.4v. I will try to do 5v tests sometime later. The tests will take several hours each plus I will have to do some setup work getting a power cable together as I don't have the correct adapters sitting around so it might be a few days before I can post the results from even the first test. FYI I am planning on doing the tests on the 2200mAh battery first because I believe its going to have a higher charge current so I want to show worst case first.
I will also try to do some current tests on what it takes with differant settings to get some solid answers on how much current you need.
Also someone asked about what can go wrong. I do want to say that computer motherboards were not designed to be used in this way and most have protection to prevent you from doing damage by pulling too much current. Chances are you would not do any damage to your computer and before something would happen the port should turn itself off. BUT it is possible although I have never heard of it happening. In the end if I was to be using one of these cables to charge I would use one of those power adapters or use a hub because those are cheap to replace.