Not charging, but really charging

[amro]

So, I noticed that the last couple if times I hooked my iPad to my Vaio, the ipad does get charged even though it says not charging. Granted, it is at a slower rate, but it went from 54% to 84% in about 5 hours.

 

[wombat888]

Yeah. I guess "not charging" means "not charging at the full speed you may expect." I get the same message using the ports on the front and the back of my HP desktop, whether I plug the cord directly to the iPad or plug the cord into the dock and put the iPad into the dock. In all cases, it does charge, a bit slowly.

Actually, iPad charging in general seems a little slow, but that's probably because the battery capacity is larger compared with most portable electronics.

 

[btrav13]

Mine does that if hooked up to my USB hub. It doesn't do it if plugged directly into my mbp.

 

[amro]

Mine does that if hooked up to my USB hub. It doesn't do it if plugged directly into my mbp.

Nice. USB hub must have a beefy power supply. Wonder what the minimum current is for the iPad to display charging.

Update: It looks as if a standard USB port maximum power is 500mA (1/2 an amp). The iPad power supply is a 10W supply which should translate to 2A if the voltage is 5VDC.