Getting this error once in a while may just be a fluke. If it starts to occur more often perhaps there's a problem. The few times I've gotten this
error consistently some device has been in the early stages of failure. IN member waheedi's case I wonder if one of the USB ports isn't starting to fail.
The answer is no. You can not suppress the over current warning until you repair the problem causing it. You can try the SMC reset to see if that works.
you can Turn off notifications https://support.apple.com/kb/PH18740?locale=en_US
only need Turn off notifications with do not disturb.
This not solve the problem, but hide the annoying pop up.
My issue is similar, but not triggered by a phone. I'm getting the message when I plug in an unpowered 2.5" external harddrive. I have two such HDs, 3 cables, all cause the pop-up. I am fairly certain I know what caused it too: I had a powered External USB hub which stopped working when I accidentally plugged a 12w power supply into it when it wanted a 3w. The 2 HDs in combination plugged into a single USB port via said Hub, no longer powered, is I think what caused the overdraw. Because I use this machine for my work and NEED those harddrives, I'm in a real bind.
I will try the 3 methods I read above:
1. Leave it unplugged and off overnight.
2. Unplug it and let the battery drain.
3. Reset SMC.
If anyone else has any suggestions given the unique way I triggered this thing that'd be great. I'm slightly concerned I may have accidentally sent some kind of power-surge through my electronics .
I had the same problem with the wrong voltage on the usb hub, 1 volt more I believe. I am really hoping there wasn't a power surge as well because my NI Maschine and NI Complete Audio 6 are not turning on now. I have read that the USB on the Maschine can go bad, but my Audio 6 interface worries me.
I also tried to install a new ssd from Transcend on my MacbookPro, and that was having really wonky problems around the same time. Transcend couldn't figure it out. The laptop would eventually bring up a spinning circle, then go black and I would have to shutdown after a few minutes. So I took that out and put the old one back and it works.
One more strange thing is that when I have the power chord hooked up to the laptop, there is a slight current of electricity that flows over the outside of the unit. Nothing crazy but I could rest my forearm on the edge of the laptop, and further down my arm would touch something and a slight burning sensation would arise. Like I said nothing overly painful, but just odd.
Any comments on these things would be appreciated. I am taking the laptop to the Apple Store today, so we will se what happens.