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

GaN is gallium nitride, a chip material that loses less energy as heat and lets a charger be built smaller and lighter. For the trip itself, what you need is plainer: a PD port your phone can draw on, enough ports for everything in the bag, and a head that fits the wall where you're staying.

The Titan 45W Travel Plug from Titan Power Plus covers all three.

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 charger 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. Built into integrated power chips, it lets the charger get by with fewer components, and 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.

Neither one tells you whether the plug goes into the wall where you're staying, or how many things charge off it at once. On a trip, those two decide whether you wake up to a full phone.

A PD port with a wattage beside it

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. On the Travel Plug, it's a 45W USB-C PD port.

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 Travel Plug charges up to four at once across its USB-C and USB-A ports, so the phone and the earbuds charge side by side off the one socket by the bed.

The right head in the box

This one lives in the box contents: match the heads that come with a charger to the sockets where you're going. The Travel Plug comes with interchangeable US, EU, UK and Australia heads, so you swap the head and keep the same plug.

One plug for the whole bag

Pack the Travel Plug. Everything above comes in one plug that weighs 130g.

Your charging for the trip comes down to this and the cables you already carry.

Plugged in, a long way from home

In a socket abroad, it adjusts to the voltage there. With the right head on, the plug that charged your phone at home does the same job in a hotel room in London or Sydney.

It's built to keep the heat down, too. A temperature control chip and a copper heat plate reduce heat while it charges, which is what you want from a plug working through the night behind the bedside table.

If it isn't right for you

It comes with a 30-day satisfaction promise and a 2-year warranty, and customer support is there 24/7.

The plug and all its heads, in one box

Get the Travel Plug. It costs $32.75 with all four heads, so when you land, the only thing to sort out is which one goes in the wall.