Comment on Don't Plug Your Phone into a Charger You Don't OwnparentComments−mindslight13yI imagine basically all of those convenience ports only put out 500mA anyway, so the negotiation isn't needed.−jonny_eh13yiPads require more juice. Whenever I plug my iPad into anything other than Apple's 10W adapter or a Mac, nothing happens.−MichaelApproved13yI plug my original iPad into other USB devices that put out 5W and it still charges. The iPad says it's not charging but it does, slowly.
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I imagine basically all of those convenience ports only put out 500mA anyway, so the negotiation isn't needed.
iPads require more juice. Whenever I plug my iPad into anything other than Apple's 10W adapter or a Mac, nothing happens.
I plug my original iPad into other USB devices that put out 5W and it still charges. The iPad says it's not charging but it does, slowly.