Practical guides

Travel Power Guides

Short, honest answers to the questions travelers actually ask.

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Buying guides Adapter and converter picks organized by destination and device. Adapter vs Converter: What's the Difference? A plug adapter changes the shape of your plug so it fits a foreign socket; a voltage conve… What Does "100–240V" Mean? (Dual Voltage Explained) "100–240V" means your device is dual voltage: it works on any grid in the world with just … What Happens If You Plug 110V Into 220V? A 110–120V-only device plugged into 220–240V receives roughly double the voltage it was bu… Step-Up vs Step-Down Converters A step-down converter lowers high voltage (e.g. 230V → 120V) for a low-voltage device; a s… What Wattage Converter Do I Need? Choose a converter rated for at least 25% more watts than your device draws — for example,… Brazil: 127V or 220V? Brazil has no single national voltage — most of the south and southeast (São Paulo, Rio) i… Mixed-Voltage & Plug-Shape Traps When Traveling Some countries combine unusual voltage with familiar-looking plugs — the Philippines (230V… USB-C, GaN & Portable Charging Abroad (Hub) Most USB-C and GaN chargers are dual voltage (100–240V) and only need the right plug adapt… Are All USB Chargers Dual Voltage? Almost all modern USB and USB-C chargers are dual voltage (100–240V) and work worldwide wi… USB-C and GaN Travel Chargers Abroad A good USB-C/GaN travel charger is usually dual voltage and works worldwide with plug adap… Hair Dryers, Kettles, and Irons Abroad: Why They Are High Risk High-watt heating devices are the riskiest travel appliances because a voltage mismatch ca… Where Is My Device's Voltage Label? Look on the underside of the device, on the power plug itself, or on the charger/power bri… Do You Need a Universal Travel Adapter? A universal travel adapter is worth it if you visit several plug regions, but it only chan… Plug Letter Types by Country (A–O System Guide) The A–O plug-letter system names socket shapes, not voltage safety. North America and Japa…