djeilers

noraa1138 said:

I'd love to see an 80W charger for my 15" MBP. As far as safety is concerned, theoretically this charger should be safer than a standard charger (should be the optimal word here). The main reason GaN chargers can be so much smaller than a standard charger is because it produces significantly less heat than a silicon based charger. Heat is one of the main culprits in the cause of chargers failing and shorting out (heat causes the various components to expand, which could lead to a short circuit). Plus, RavPower has a pretty good track record. Time will tell however.

I have a Ravpower 45 w GaN power adapter.  It is very small. I also have a 15" MacBook Pro 2016.  To my surprise, it will charge my MBP even while I am using it.  It is a bit slower, but not bad.  I was told by someone at an Apple store that you would likely need the 80 w adapter to charge a 15" MBP because, while the others would charge it, they could not keep up with the power demands and the MBP would slowly discharge if you were using it while you were attempting to charge it with a lesser powered adapter.  This is not the case.  It charges fine even while in use.  I've never tested the exact speed, but when I plug the 45 w adapter into my MBP, it will charge from maybe 30% to 100 % before I'm finished with my work at a coffee shop.  The Ravpower 45 w never seems to be hot or even very warm.