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Old 10-20-2007, 12:22 PM   #18 (permalink)
ezrunner
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What is the normal output of a usb port? The charging circuit controls the draw to a max of approx 500ma. That is why you can use a charger that sends 2000ma because the charging circuit will not allow anymore. The charging circuit can't tell the USB to send more current. If a typical BB uses 500ma and the usb port only sends 100ma then that is all the BB can draw upon. I may be wrong been a long time since i dealt with electronics
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