I was reading on another site that the USB ports in the gen 2 volt only put out about 0.5A and I tend to agree. When I am talking on the phone with it plugged in I gain about 1 or 2% charge in 30 mins. When I am using google maps it actually loses power. Why would Chevrolet bother putting in such weak output USB ports in 2016? But for only $10 I can buy a cigarette lighter adapter on amazon that can output USB 2.1A and I guess that is what I have to do. Seems like GM could have splurged and put some in that were better if I can buy them for $10. Anyone else bothered by this?