ipad not charging from laptop

A lot of computers (especially older ones) generally do not provide enough power to their USB ports to charge the iPad at a sufficient rate - it may still be charging slowly, and should be a bit quicker if the iPad's screen is off (if you leave it for a while and then disconnect it from your computer you may find that it's battery percentage has gone up). The wall charger is usually the most efficient way to charge the iPad.

iPads don't charge with computers, USE THE WALL ADAPTER...different watts from computer vs wall. Needs at least 10 watts

I use this download and it works great! I dont like to drag the wall charger with me to the office but sometimes I need it. I dont know exactly how it works, I am not verry computer literate, but it acts as if it boosts the power comming from the USB. all I know is my iPad charges from my desktop and laptop after I downloaded and instaled it on them. Hope it helps!

http://event.asus.com/mb/2010/ai_charger/

The quickest way to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter. When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it's in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.

At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes.

 Cheers, Tom 😉

I took your suggestion....BAM it worked. So thank you and I will pass this on. How did you find this out? You have solved my problem.

This Asus little tool I can not advise.

But it is for PC motherboards anyhow, not Mac, it lets more current flow through some parts of the PC internal motherboard, I do not like it. Better to use an USB Hub with connector for the power outlet...

Explanation given by Texas Man.

The New iPad Battery is 70% larger than the iPad2. The charging time with the iPad charger is almost double that of the iPad2 (both chargers are 10Watts). The USB out from the computer is not powerful enough to charge the New iPad and does not charge much on the iPad2/iPad.

unless you have a modern MacBook Pro, or certain recent PC models with high power USB ports (there are 2 types of high power ports, it must be a newer one), it will not charge when plugged into the computer. (well it may, but at an infinitely slow pace and only with the screen off).