Unlike the iPhone, Apple ships a USB-C power adapter with all its MacBooks: Air and Pro. Unless your laptop stays in the same place all of the time, having a spare or a specific travel MacBook charger is a useful addition. You can buy a second Apple charger or check out more versatile, cheaper and smaller MacBook chargers to suit your needs and budget.
It’s important to note that there are risks with buying a cheap charger and we don’t recommend you choose on price alone. That bargain MacBook charger might just fry your laptop or get dangerously hot. However, there are some great premium chargers from trusted brands that sell for less than Apple pricey chargers.
Read more at Macworld.com