Macbook Pro 2016 with 30W power delivery

braveheart0707

macrumors newbie
Original poster
Sep 17, 2016
5
0
Just purchased the Acer H277HU monitor, and the USB-C only delivers/chargers the 2016 Macbook Pro Non Touch-bar with 30W of power, while the factory supplied charger delivers 61W.


Question: For long term usage, aside from obviously a slower charging time and possibly not enough charging power during peak load, what negative effect this will have on the health of the battery? Will this make the battery die much faster by inducing more charge recycles than necessary?


Thanks!
 

chabig

macrumors 603
Sep 6, 2002
6,069
3,306
I don't think there are any negative or positive consequences at all to your choice of chargers. The battery will charge slower but that won't affect the cycle count.
 

matram

macrumors regular
Sep 18, 2011
124
47
Sweden
Should be no effect on the cycle count, but there may be a problem with power draw with external equipment and a 30W supply.

My 2016 15" draws around 4W with light usage, e.g. note taking. But connect a beamer and power usage is up at 30+ W. Have you checked the power draw with monitor attached?
 

braveheart0707

macrumors newbie
Original poster
Sep 17, 2016
5
0
Should be no effect on the cycle count, but there may be a problem with power draw with external equipment and a 30W supply.

My 2016 15" draws around 4W with light usage, e.g. note taking. But connect a beamer and power usage is up at 30+ W. Have you checked the power draw with monitor attached?
The 30W number is drawn from the system report information page WITH the monitor connected as a external display.

Thats ok, I anticipated the possibility of a power draw higher than 30W and the laptop unable to charge. I don't do much high demand stuff. My only concern is longevity and health of the battery.
 

W1cH099

macrumors member
Jan 29, 2019
45
12
Guatemala
like everyone said it shouldn't affect the battery at all just slower charge but I suppose its not a concern anyway about the battery cycles don't worry about that battery replacement aren't that expensive to be wort worrying about
 

LogicalApex

macrumors 6502
Nov 13, 2015
494
434
If anything, it will help the battery not harm it (but overall the impact it likely negligible). Batteries generate less heat when charging slower and they last longer slowly charging as a result. If you want a battery to last as long as possible you generally want to charge it as slow as realistic.
 

ksowder

macrumors newbie
Feb 13, 2013
23
4
Had my 2018 15" plugged into the 30W port on my dock instead of the 60W. About Halfway through the work day I noticed I was down to about 50% battery (started at 100%). If you mainly use your device for processor intensive tasks. This is something to keep in mind.