What is a GaN charger, and what do you need for a trip?

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GaN is gallium nitride, a chip material that loses less energy as heat, so a charger built with it can be smaller and lighter. PD is USB Power Delivery, the USB standard for more flexible power over one USB-C cable.

For the trip itself, here's what a charger has to give you: a PD port your devices can draw on, enough ports for all of them, and a head for the sockets where you're going.

Titan Power Plus makes one plug that covers all of it.

Every listing says GaN and PD

You've got the bag open and you're scrolling chargers, and nearly every title has GaN or PD in it. It's easy to take those letters as the thing you're paying for, and to worry that the wrong pick means a dead phone halfway through the trip.

Here's how it actually goes wrong after you land. The prongs don't go into the hotel socket, and you're digging through a pouch of loose adapters. Or there's one outlet by the bed, the phone and the earbuds take turns on it, and one of them is still flat in the morning.

So what do GaN and PD do?

GaN is about what goes on inside the charger. In a GaN charger the transistors are gallium nitride, which is efficient at transferring current. Put into integrated power chips, it lets the charger get away with fewer components, so the body can be smaller and lighter.

PD isn't a material at all. It's the USB Power Delivery specification, a standard a port is built to, and it gives you more flexible power, along with data, over a single cable.

What neither one tells you is how many things you can charge off it at once, or whether it'll go into the wall where you're staying. Those are on other lines of the listing. Find them, and the PD port, before the charger goes in your bag.

1. Does it have a PD port?

Look for the letters PD next to a USB-C port, with a wattage beside them. That pairing tells you the port runs on USB Power Delivery and how much power it's rated to give your devices. On the Titan 45W Travel Plug, that's a 45W USB-C PD port.

2. Will it charge everything I carry?

Count what in your bag charges over USB, then find the line that says how many devices a charger takes at once. The Titan 45W Travel Plug charges up to four devices at once across its USB-C and USB-A ports, so the phone and the earbuds charge side by side off one socket.

3. Will it fit the wall there?

This one is in the box contents. See which heads come with the charger and match them to where you're going. The Titan 45W Travel Plug comes with interchangeable US, EU, UK and Australia heads, so you swap the head and keep the same plug.

Which plug should I pack, then?

For the trip ahead, the Titan 45W Travel Plug is the plug to pack, and it is the one recommended here for travel.

It meets every line above in one plug that weighs 130g. You land, fit the head for that country, and your phone and the rest charge from the one plug overnight.

Does it hold up at the wall?

Plug it in abroad and it adjusts to the voltage at the socket, so the same plug goes from a US room to a UK one: swap the head and it is ready to charge.

Rated 4.80 out of 5 from 15 store reviews.

What if I'm not happy?

Every Titan 45W Travel Plug comes with a 30-day satisfaction promise and a 1-year warranty, and customer support is there 24/7.

So what should I get?

The one to get is the Titan 45W Travel Plug. It costs $29.75, and that buys the plug with all four of its heads in one box.

“Charges devices really quick which is great and being able to just swap the heads for different sockets makes life really easy instead of carrying a bunch of adapters.” Verified buyer

“Great for allowing multiple cables off of one outlet.” Verified buyer

“Very good and reliable” Verified buyer

“Rugged and versatile device.” Verified buyer

“Versatile and practical!” Verified buyer