Anker · Tech & Power · Worth packing
Anker Nano Power Bank 5,000mAh (Built-In USB-C)
A pocket battery that plugs straight into your phone
A pocket-size 5,000mAh battery with a fold-out USB-C connector that plugs straight into a phone, charging at up to 22.5W. About 3.5 oz, with a USB-C cable included.
Our take
Your phone doesn't die on travel days because the battery is bad. It dies because maps and photos run all day. A quick top-up in the afternoon fixes it, and the cable is usually what you forgot.
This one has no cable to forget. The USB-C connector folds out and plugs straight into the phone. It's about 3.5 oz, so it lives in a pocket, and up to 22.5W charging tops you up fast during a long day of directions and photos. The limit is size. 5,000mAh is roughly one phone recharge, so it's a day-saver, not a multi-day backup. Phones without USB-C can't use the plug, and a thick case around the port may block it.
If you have a USB-C phone and do long city days, get this one. Check the price before you book.
Who it’s for
City walkers and day-trippers with a USB-C phone who want a quick top-up without carrying a cable.
Skip it if
Skip it if you go days without an outlet or charge several devices. A 10,000mAh or bigger power bank carries more.
Anker Nano Power Bank 5,000mAh (Built-In USB-C): questions people ask
Can you bring a power bank on a plane?
Yes, but it goes in your carry-on, never your checked bag. A 5,000mAh bank is well under typical airline limits.
How many phone charges is 5,000mAh?
Roughly one full charge for most phones, since some energy is lost along the way. Bigger phones may get a bit less.
Will a built-in USB-C plug work with my phone case?
It works with most slim cases. A thick or rugged case can stop the plug seating fully, so test it at home first.
Where we recommend it
The Best Power Banks, Chargers and Travel AdaptersYou probably don't need the biggest battery. A 10,000mAh bank covers a full day out, and one universal adapterWhat to Pack for ParisPlenty of people pack an umbrella for Paris and then fight it on narrow sidewalks all week. Rain shows up everWhat to Pack for TokyoIt's easy to pack Tokyo for the temperature and forget the humidity, which is what makes August, with its 34°CWhat to Pack for SeoulSeoul isn't a mild city with the odd cold snap. January lows average -7°C, and summer brings 30–31°C highs witWhat to Pack for BangkokBangkok is hot every single month, with highs of 31°C or more, and the temples still want your shoulders and kWhat to Pack for BerlinBerlin doesn't have a dry season to plan around. Rain is spread through the year, and temperatures swing from What to Pack for CopenhagenCopenhagen's numbers look mild, and that's the trap. 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Summer highs hit 33°C with rain on 20 or more days, buWhat to Pack for MontrealMontreal winters get the attention, and they deserve it, with January highs of minus 5°C and lows of minus 12°What to Pack for AmmanPeople pack for Amman like it's the Gulf, then get caught cold. It's a high, hilly city where winter lows sit What to Pack for Washington DCWashington looks compact on the map. Then you walk the National Mall, where the Lincoln Memorial to the CapitoWhat to Pack for MiamiMost people pack for Miami's heat and get caught by the rain. From June to October you'll see 19 to 26 rain daWhat to Pack for BanffPeople pack for a Banff summer like it's summer anywhere else. July averages 23°C in the afternoon but only 8°What to Pack for ZurichPeople expect Zurich to be cold. The real problem is how often it rains, with 18 rain days in both May and JulWhat to Pack for SeattleSeattle's rain is rarely heavy. It's frequent, with 19 rain days in December and grey drizzle most of the wintWhat to Pack for Cape TownPeople pack for Cape Town's summer sun and get caught out by the wind. The southeaster can blow hard for days What to Pack for AustinAustin heat isn't a summer-only thing. Highs hit 30°C in May, stay there or above through October and peak at What to Pack for MelbourneMelbourne's morning forecast isn't the weather you'll have by the afternoon. Locals call it four seasons in onWhat to Pack for SantiagoSantiago's dry air means big swings between day and night. A January afternoon hits 31°C and the night drops tWhat to Pack for MadridMost people pack for Spain and get Madrid wrong. The city sits high on a dry plateau, far from any beach, so JWhat to Pack for Mexico CityMexico City isn't beach Mexico. It sits at about 2,240 meters, so the midday sun is strong but winter nights dWhat to Pack for BeijingBeijing swings hard. 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The upper leveWhat to Pack for San FranciscoMost people pack shorts for a California summer and freeze in San Francisco. July highs here are just 19°C, foWhat to Pack for CairoMost people pack for Cairo's heat and forget its winter. From December to February nights drop to 10–12°C, andWhat to Pack for New YorkMost people pack outfits for New York and the wrong shoes. You'll walk miles of pavement and climb subway staiWhat to Pack for SalzburgPeople pack for Salzburg's cold winters and forget its summers are the wettest part of the year. July has 19 rWhat to Pack for HoustonEveryone warns you about Houston's heat. Nobody warns you about the air conditioning. You'll spend a lot of yoWhat to Pack for Quebec CityOld Quebec is built on a cliff, with steep streets and stairways between Upper and Lower Town. In winter thoseWhat to Pack for RigaPeople pack for Riga's cold and forget its rain. July is the wettest month of the year, and summer here bringsWhat to Pack for TallinnMost people pack for Tallinn's cold and get beaten by its hills and cobbles. The Old Town is steep, uneven stoWhat to Pack for BordeauxPeople picture Bordeaux as sunny wine country and leave the rain jacket at home. It rains on 10 or more days iWhat to Pack for GivernyMost people treat Giverny as an easy day out from Paris and dress for a city. It's a village and a garden, witWhat to Pack for Abu DhabiMost people pack for Abu Dhabi's heat and forget the cold. From May to September highs run 37–42°C outside, buWhat to Pack for OrlandoPeople pack for Orlando by the forecast high. The real problem is the miles. A theme park day means hours on yWhat to Pack for ValladolidMost people pack for Valladolid like it's Cancún. It isn't a beach town. You'll spend your days in cenotes, atWhat to Pack for LyonLyon looks flat on the map. It isn't. Fourvière and Croix-Rousse are steep hills full of staircases, and VieuxWhat to Pack for AgraMost people plan Agra around the Taj Mahal and pack for the heat. That's only half right. From December to FebWhat to Pack for Loire ValleyPeople pack for the Loire Valley like it's the south of France. It isn't. Even in May there are 14 rain days, What to Pack for San AntonioPeople think San Antonio is just hot. The bigger surprise is spring. May is the wettest month with 14 rain dayWhat to Pack for CapriMost people visit Capri on a day trip from Naples or Sorrento and pack like they're going to a beach. The islaWhat to Pack for MarseillePeople pack for Marseille like it's always summer. It's dry, with no month over 9 rain days, but the mistral wWhat to Pack for PhiladelphiaPeople think of Philadelphia as a mild East Coast city. It swings hard. July hits 32°C with 14 rain days, and What to Pack for Xi'anMost people plan Xi'an around the Terracotta Warriors and forget how far the weather swings. Winter lows drop What to Pack for GuanajuatoMost people pack for Guanajuato like it's a beach town in Mexico. It isn't. It sits high in the mountains, theWhat to Pack for Luxembourg CityPeople think of Luxembourg City as a flat little financial capital. It's built on cliffs. The old town sits hiWhat to Pack for GlasgowGlasgow's packing problem is rain. It rains on at least 10 days in every month of the year, often in quick shoWhat to Pack for TorontoToronto's packing problem is winter. January averages a 0°C high and a -5°C low, with wind off Lake Ontario onWhat to Pack for Cabo San LucasCabo is desert, not jungle. The packing problem is dry heat and the sea: many Pacific beaches have dangerous sWhat to Pack for RovaniemiRovaniemi is properly cold. January averages a -13°C low, and you will spend that time outdoors on husky ridesWhat to Pack for AnchorageAnchorage summers are cool and often damp, and most visitors are headed somewhere colder and wetter. Pack layeWhat to Pack for OaxacaOaxaca sits at about 1,550 m, so the sun is strong and the nights are cool. A single day can swing from a 10°CWhat to Pack for AspenAspen's problem is altitude. The town sits at about 2,400 m, so the sun is strong, the air is dry and nights gWhat to Pack for WhistlerWhistler's winter is wet, not just cold. The village hovers around freezing, so you get heavy coastal snow andWhat to Pack for PatagoniaIn Patagonia the wind is the packing problem. Torres del Paine can go from sun to sideways rain in an hour, evWhat to Pack for BarbadosBarbados is a beach island with real rules about clothing. 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