Can I enable powere USB in sleep (closed) when under 49% battery ion lion? 2011air

[LightOnAHill]

So I have a MBA 2011 ultimate and I love that I can plug in the iphone when it's up and running, and then put it in sleep, and the computer keeps the usb port powered and the phone keeps charging at a minimum use of the computer's battery.

but when the computer's battery is below 49%, then it will discontinue charging the iphone, won't give power to the USB.

Question: is there a way to overcome this cutoff and let it charge the phone in sleep until like 10% or some more reasonable number?

Thanks in advance ya'll, this place rocks for us lurkers.

 

[GGJstudios]

iPhone and iPod touch: Charging the battery

If using a portable computer, make sure it is plugged in to power and that the display (or lid) is open. If the display is closed, the computer may go into standby, sleep, or hibernation mode and iPhone or iPod touch may not charge.

No, there's no way to change it.

 

[LightOnAHill]

iPhone and iPod touch: Charging the battery

No, there's no way to change it.

No way to change it!?! Darn(mn)!