If I take use a USB Type A to USB Type C cable, (like [this](https://rads.stackoverflow.com/amzn/click/B0119QMQ6O)) and plug it into a wall converter similar to the ones that come with iPhone charger (basically just a little box that plugs into a wall and has a female USB Type A port), will it be safe to plug the USB Type C end into my new MacBook pro to keep the battery from dying?

I just need it to maintain the battery level and I want to make sure it's not going to damage the overall life of the batter.