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matthewpomar

macrumors member
Original poster
Oct 27, 2010
75
8
While playing a graphics intensive game on my MacBook Pro 16 and connected to the included 98 watt battery charger through a travel dock (output 85 watts to computer), my laptop battery is drained. Seems the CPU and GPU is pulling more power (more than 85 watts) to keep the batter charged and power the laptop during game play.

I need to the dock in order to connect my mouse, keyboard, and USB headset.

Can I connected a second charger to the MacBook Pro to help supplement the power during game play? Will this work and will this cause any problems/damage to the computer if I do so?

Thank you.
 
Last edited:

matthewpomar

macrumors member
Original poster
Oct 27, 2010
75
8
What’s the problem? Your machine has four USB-C ports, just plug the charger into one of the other two or three you aren’t using for your dock.

I'm using this dock:


It requires the MacBook charger to power it and provides passthrough charging to the MacBook Pro.

I've done some more research and it appears the MacBook will only use one power adapter having the highest watts, even with two plugged in:


I suppose I could power the MacBook Pro directly using the 100watt charger and then use my second MacBook Pro changer to power the USB-C dock, but I'm concerned about damaging the MacBook.
 
Last edited:

matram

macrumors 6502a
Sep 18, 2011
781
416
Sweden
Your hub can only pass through 85W which, while the MBP can draw up towards a 100W. There is a long thread about 100W hubs which you may want to check.

The MBP will only use one charger if multiple chargers are connected. I assume it will uset the charger with the highest announced power delivery.
 
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