What sets the AC plugs apart is that each one is earthed. You can plug in your laptop's AC charger to speedily juice it back up, but that means carrying the heavy charging brick around. That's enough to fast-charge most phones and tablets, not so much a laptop. There are three USB-A ports on the bottom as well as a USB-C port that supports Power Delivery and Quick Charge 3.0 to deliver up to 18 watts. It promises to work in more than 150 countries. The OneWorld PD has sliding toggles on the side that cover the US/Canada, the UK, and Australia/China, and you can pop out a much smaller stand-alone European adapter. ( This video explains grounding really well.) Thankfully, there's overload protection with an 8-amp fuse, and it comes with a spare, but you should not use this adapter with any device that has a third metal ground pin on its plug. The main problem is the lack of any grounding, which is meant to reduces the risk of an electrical shock if there's a fault, such as a loose wire inside a device with a metal case. ItвЂ™s not as well constructed as our other two universal adapter picks below, but it's much cheaper. This plug can recharge your power-hungry devices, like laptops and camera batteries, but there are four USB-A ports on the bottom and a 15-watt USB-C port on the side for phones, tablets, smartwatches, and Kindles. It has sliders you push to reveal the three most common international plugs-EU, UK, and US-and you can rotate the pins for sockets in Australia or China. With the capability to work in more than 150 countries, this affordable adapter from Epicka will do the job for most people.

European power adapter for macbook pro