Ever wondered why so few portable USB devices can be recharged from the USB port, even though it provides half an amp of relatively clean power at 5V?
* Technically, now Ipods can be charged with USB power, avoiding the patent by using the docking cradle as sort of an electron-laundering middleman so that it’s no longer technically charging from “USB power”, but rather “dock power” from a dock which happens to be powered from USB…
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