It's a small detail that ruins more trips than it should: arriving somewhere with a phone at 10% battery and no way to charge it. Here's how to get this right before you leave, not after you've landed.
Understanding Plug Types
The world uses around 15 different plug/socket types, grouped by letters (Type A through Type N). The key ones to know:
- Type A/B (US-style, flat pins): North and Central America, parts of Asia
- Type C/E/F (Europlug/Schuko): Most of continental Europe
- Type G (UK-style, three rectangular pins): UK, Ireland, and former British territories (including many Middle Eastern and some Asian countries)
- Type I (Australian-style): Australia, New Zealand, China, Argentina
- Type D/M (Indian-style): India, parts of Africa
Before any trip: Search "[destination] plug type" — don't assume based on geography, as colonial history means plug types don't always follow continental patterns (much of the Middle East uses UK-style plugs, for example).
Voltage: The Part People Forget
Plug shape isn't the only consideration — voltage matters too. The world is split roughly between:
- 110–127V (North America, parts of Japan, Central America)
- 220–240V (most of the rest of the world, including Europe, UK, Asia, Australia)
Modern electronics are almost universally dual-voltage — check the small print on your charger's label. It will say something like "Input: 100-240V" — if so, you only need a plug shape adapter, not a voltage converter.
Devices that may NOT be dual voltage: hair dryers, straighteners, and other high-wattage appliances. Using a single-voltage 120V hair dryer in a 230V country (with just a plug adapter, no voltage conversion) can damage the device or be a fire risk. For these, either buy a dual-voltage travel version, buy a cheap one at your destination, or use a proper voltage converter (bulky and adds weight — often not worth it for short trips).
Universal Adapters vs. Single-Country Adapters
Universal adapters (one device with sliding/interchangeable pins covering most plug types) are the practical choice for most travellers — one item covers nearly anywhere you'll go. Look for ones with:
- USB-A and USB-C ports built in (reduces the number of separate chargers needed)
- A fuse (genuine safety feature; cheap unbranded adapters sometimes lack this)
- Compact size — some "universal" adapters are bulky; reviews often note this
Single-country adapters are cheaper and smaller if you're going to one region repeatedly, but become clutter if you travel to multiple regions.
Power Banks: What to Look For
Capacity (mAh)
- 5,000mAh: One full smartphone charge, roughly. Good for day trips.
- 10,000mAh: 2 full smartphone charges. The sweet spot for most travellers — enough for a long travel day without excessive weight.
- 20,000mAh+: Multiple device charges or for trips with limited charging access (camping, long-haul with multiple devices). Heavier and bulkier.
Airline Restrictions
Power banks must go in carry-on luggage, never checked bags (lithium battery fire risk in the cargo hold). Most airlines limit power banks to 100Wh without special approval — most consumer power banks (up to about 20,000mAh / ~74Wh) fall within this without issue, but very high-capacity ones (25,000mAh+) may approach or exceed the limit. Check the Wh rating printed on the device, not just mAh.
Output Ports and Charging Speed
USB-C with Power Delivery (PD) charges modern phones and even laptops significantly faster than older USB-A. If you're charging a laptop from a power bank, you need one rated for sufficient wattage (typically 45W+ for most laptops) — not all power banks support this even if they have a USB-C port.
Pass-Through Charging
Some power banks can charge your phone while themselves being charged — useful if you only have one outlet available (a single adapter slot, for example) but need to charge both your phone and the bank overnight.
A Practical Kit
For most international trips, this combination covers nearly everything:
- One universal travel adapter with built-in USB-A/USB-C ports
- One 10,000–20,000mAh power bank with USB-C PD output
- A single multi-port wall charger (reduces the number of adapter slots you need)
- Cables: USB-C to USB-C, plus a Lightning cable if you have older Apple devices
This setup means you typically need only one or two adapter slots even if travelling with multiple devices — useful in hotel rooms with limited outlets, or on flights with a single shared power outlet between seats.
Charged up and ready to go — now you just need somewhere to go. AirHuntr tracks flight deals worldwide.
