I've got a 2017 MacBook Pro which comes stock with an 87W USB C Power Adapter.
I want to purchase an additional power adapter, but I don't require an official Apple one. I notice that Anker make one with 60 W power output over USB C.
Other than charging my laptop at about 2/3rds the speed of the Apple Power Adapter, (2/3rds = ca. 60/87 w), would there be any effect / damage on my machine?