This Skross adapter looks pretty similar to the one listed above, but it has one significant difference: it includes an earth pin, and is rated for up to 1575W, meaning you can safely use it to (quickly) charge high power devices like laptops. But there is a 10-amp fuse with a spare included, and this adapter conforms to IEC 60884, CE, and FCC standards.

Both USB-C ports offer 100-watt charging, and both USB-A ports are 18 watts, but 100 watts is the maximum in total, so when you plug in multiple devices, it divides between them. These types of travel adaptors should only be used with double insulated equipment, which will be clearly marked with the symbol shown below. With the capability to work in more than 150 countries, this affordable adapter from Epicka will do the job for most people.This Switzerland-made example from Skross doesn't convert voltage, but it does work with power-hungry devices including laptops and travel hairdryers. This normally includes the use of a travel adaptor, which is a device that simply allows you to plug any UK electrical appliance into a foreign electrical socket. To make sure you see all the USA has to offer, it’s important to plan your trip, before you set off on your adventure. One thing you don’t have to worry too much about though is surge protection – these days, the majority of adapters have this built in.

Jet off to more than 200 countries with this compact adapter in your luggage, and you can charge up all your gadgets.

As with other three-pin plugs, note that it means it won’t fit every plug socket – the earth pin isn’t removable, so won’t fit two-pin sockets in the US or Australia, meaning you might find some sockets you just can’t use. For the most part, this isn’t an issue, but it may mean that some devices will charge more slowly than you’re used to, and some of the most power-intensive might not work at all if they can’t draw sufficient power from the mains to run. Our one gripe was that the sliding controls erred on the stiff side and more than once we had to prise out the prongs manually. This is another wonderfully compact adapter designed with phones and USB C-charging laptops in mind, although the tiny size of the different attachments might be a downside for those prone to clumsiness.