You plug in your adapter to your laptop, and the battery doesn’t charge reliably. Sometimes, your Mac dings to let you know it’s plugged in to power; other times, you have to plug and unplug ...

Amazon Basics 3-Pack Travel Plug Adapter Type E/F, Europe Don't let your devices become useless in Europe. Keep them charged with these travel plug adapters.

“It’s important to stick to the adapter your vehicle manufacturer specifies,” said Consumer Reports' Gabe Shenhar.

A travel adapter essentially converts the shape of the plug, but it does nothing to convert voltage, which also differs from region to region.