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Some users find iPad not charging on USB ports

updated 04:45 pm EDT, Sat April 3, 2010

USB hubs, Windows PCs struggling with iPad power

A number of early iPad buyers have reported that the tablet isn't charging from their computers' USB ports. Even when using rear ports, some Windows PC owners have noticed their iPads refusing to charge at all. Most Mac owners haven't had issues, and all have successfully charged from the bundled AC adapter.

Apple already has a support document warning that the iPad won't charge from low-power ports, such as those on wired keyboards or some front-mounted ports on Windows computers. The iPad's much larger 9.7-inch screen and possibly other demands call for more energy than the iPhone or iPod.

Whether or not the problem is widespread or can be fixed with a firmware update isn't known given the small amount of time the iPad has been on sale. Company representatives have so far told shoppers to charge directly through USB in the interim.

By Electronista Staff
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  1. abusamer

    Fresh-Faced Recruit

    Joined: Jan 2009


    iPad not charging from MBP

    I just picked up my 32GB iPad and it's not charging from the USB port on my Mac Book Pro.

  1. cartoonasaur

    Fresh-Faced Recruit

    Joined: May 2009


    USB 1 or 2?

    The reason could be that USB 1.0 can't charge the iPad AND also it could be that the PC folks disabled that port (for some reason or problem) or the port isn't properly recognized by Windows. There are so many issues with USB on both platforms, but many more issues on Windows due to configuration abilities that Mac users typically never have to deal with.

  1. dmcnickle

    Senior User

    Joined: Dec 2000


    comment title

    Mine charged fine on my MacBook Pro.

  1. Wingsy

    Fresh-Faced Recruit

    Joined: Apr 2005


    No Problem Here

    I don't have the problem since I don't own a Windows computer.

  1. Roehlstation

    Fresh-Faced Recruit

    Joined: Aug 2001


    No secret

    A lot of logic boards used in Windows PCs have underpowered USB ports, I'm not surprised at all.

  1. panjandrum

    Forum Regular

    Joined: Dec 2004


    Mac Pro Tower, not charging

    My 32GB iPad does not charge from any port on my Mac Pro tower, nor does it change when attached to a powered usb hub.

  1. James Katt

    Junior Member

    Joined: Mar 2008


    Old News - Some USB Ports don't have power.

    This is old news.

    Some USB Ports do not provide the standard 500 mAH x 5 volts of power to peripherals.

    Many manufacturers did this as a cost cutting measure.

    Apple did this for example.

    The latest MacBooks and MacBook Pros will only allow a SINGLE 500 mAH device TOTAL on the available USB Ports. The other ports will only support low power devices such as keyboards.

    Some Manufacturers have NO 500 mAH USB port (called a powered port). Thus, the iPad will not charge on such a port. The iPod and iPhone may themselves not charge on such a port.

    The solution is to connect the iPad to a powered USB HUB - where every USB port can have a 500 mAH device, or use the iPads own charging block.

  1. Feathers

    Grizzled Veteran

    Joined: Oct 1999


    So what!

    There's a 10w charger in the box. Why would anyone want to charge at a painfully slow rate from a USB socket when there's a faster charger in the box. WTF?

  1. Mrjinglesusa

    Professional Poster

    Joined: Feb 2002



    Because we want to charge and sync to computer at same time. Duh.

  1. cashxx

    Fresh-Faced Recruit

    Joined: Apr 2009


    Put iPad to sleep

    Has anyone tried putting the iPad in sleep mode or turning it off? Should charge then.

    To get the fastest charging use the charger in the box. For slow charge use a USB while the iPad is off or on the latest Macs that support the full power of a USB port you should be able to run the iPad and have it charge at the same time.

    If you do have the iPad off and plugged in you may still get the not charging message. Ignore it and check the battery level on the iPad after an hour or something.

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