The Anker Nano Travel Adapter (A9215) tackles the single most annoying part of international travel — hunting for the right plug shape, then realizing you only have one outlet to share between three devices. Anker shaved 43% off the size of its previous-generation model to land on a footprint roughly the size of a credit card, at just 3.39 × 1.97 × 0.98 inches and under 4 ounces.
The standout design choice is packing real functionality into that tiny shell: one grounded AC outlet plus two USB-A and two USB-C ports, letting you power five devices simultaneously from a single wall socket. The solo USB-C port pushes 20W on its own — enough to take an iPhone 16 to 50% in about 28 minutes — while all four USB ports share 15W when running together. Slide-out prongs cover Type A (US/Canada/Japan/China), Type C (EU), Type G (UK/Singapore), and Type I (Australia), giving genuine global coverage from one unit.
On safety, Anker built in a self-resetting fuse, fire-resistant housing, safety shutters, and a temperature-monitoring chip that limits power before things get warm — six layers of protection in total. The grounding pin runs the full length of the AC outlet, and it correctly passes through the earth pin on polarized US plugs rather than leaving a floating ground, a detail most budget adapters get wrong.
In real-world use, the slim profile sits closer to the wall than bulkier cube-style adapters, which makes it noticeably less likely to sag or pop loose under the weight of multiple charging cables — a common annoyance with larger universal adapters. The trade-off is clearance: in one tightly recessed outlet, the slim body left no room to extend the UK prong fully, though switching to a different plug profile solved it. The foldable, retractable pins also mean the whole thing collapses flat enough to disappear into a mesh pocket.
The honest caveats: this is explicitly not a voltage converter — it changes plug shape only, so high-draw single-voltage appliances like hair dryers or kettles from certain regions still need a separate converter. It's also a 2-pin to 2-pin design that doesn't support grounded 3-prong plugs like EU Schuko or most laptop power bricks with a ground pin, which rules it out for some larger device chargers. And competitors like the EPICKA TA-105 pack in more ports and the TESSAN GM-636 pushes far higher USB-C wattage (100W vs. 20W), so frequent laptop travelers may find themselves wanting more power than the Nano can deliver. That said, for the vast majority of travelers juggling a phone, earbuds, and a smartwatch, the Anker Nano's blend of true pocketability and genuine multi-device charging makes it one of the best all-around travel adapters we tested in 2026. We awarded it Best Compact Travel Adapter in our 2026 Best Travel Gear Awards. Browse our full travel gear reviews or travel adapter category.
