The Best Travel Power Banks

A power bank is the one travel gadget you notice only when it's missing. Your phone dies at the gate, the airport outlet is blocked by someone's suitcase, and the rental car's USB port barely trickles. A good bank fixes all of that. But travel adds rules that home use doesn't. It has to ride in your carry-on. It has to stay under the watt-hour limit your airline enforces. And it has to earn the space it takes in a bag you've already overpacked, which means weight and port count matter as much as capacity.

Here's what no power bank does well. The number on the box is measured at the cell's voltage, so you'll get roughly 60 to 70 percent of it into your phone. A 10,000mAh bank is closer to two full phone charges than three. High-wattage banks also get warm, and they slow down when they do. Airline policy keeps moving, too: several carriers and countries now restrict using a bank during the flight, not just packing one. So check your airline before you go.

Buy for the trip you actually take. One phone and a tablet? A 10,000mAh bank is plenty and weighs almost nothing. A laptop you work on at altitude wants 20,000mAh and at least 65W of output. Watch for recalls, too — Anker pulled more than a million PowerCore 10000 units in the U.S. over fire and burn reports. We think that the UGREEN Nexode 20,000mAh is the best power bank for travel for most people, and that the Baseus 45W Ultra Slim is the one to buy if you want something pocket-sized with cables already attached.

This guide is for people who fly or take long trips and want one battery that handles it. If you're carry-on only, if you work on a laptop in airports, or if you've ever watched your phone die while a map was open in a city you don't know, you're the reader we had in mind. We cover banks from 5,000mAh up to the 99.75Wh ceiling that airlines allow without approval, including magnetic Qi2 models for iPhones and ultralight ones for backpacking.

We don't cover anything over 100Wh, portable power stations, solar panels, or wall chargers — different rules, different bags, different guide. If you already own a working 10,000mAh bank and you only charge a phone, you probably don't need a new one; capacity fades slowly, and a bank that still gets you through a day is fine. The exception is a recall. If your model is on the CPSC list, replace it now and don't wait for a trip.

We started from the rules and worked back to the products. Watt-hours: every pick converts to under 100Wh so it flies without airline approval, and we treated 99.75Wh as the practical ceiling. Output per port: laptop picks needed at least 65W from a single USB-C port, because a big total output split across four ports won't charge a MacBook. Weight and shape: we compared published weights and dimensions and favored banks you'll genuinely carry — half an inch thick for pocket use, under about a pound and a half for laptop duty. Safety: we checked CPSC recall notices, stated certifications and temperature protection, and counted repeated owner reports of overheating against a product. Display and recharge: a numeric screen beats four indicator lights, and fast input matters more than most people expect when your only free outlet is at the gate.

If you want the lightest bank that still holds 10,000mAh: The Nitecore NB10000 Gen4 ($83.95) — The Nitecore NB10000 Gen4 weighs 4.94 ounces — less than a deck of cards, and under half what a comparable bank weighs. It's IPX7 rated, so rain and splashes are a non-issue, and the included lanyard doubles as a USB-C cable, which is a genuinely clever fix for the cord you always forget. Both USB-C ports charge in and out at 22.5W, with pass-through support when there's only one outlet. Knock it to see the charge level. You give up speed and any laptop ambition, and owner feedback on this generation is still thin. For a thru-hike or a one-bag trip, it's what we'd carry.

If you want magnetic charging and a cable in one slim package: The INIU Magnetic Slimmest Power Bank ($54.99) — INIU's magnetic bank is half an inch thick, holds 10,000mAh, and does Qi2 at 25W instead of the usual 15W — INIU says that takes an iPhone 17 Pro to half in 33 minutes. The attached USB-C GoCord detaches and becomes a 45W charging cable, so you get wireless convenience and wired speed from a single object, and a digital display shows the exact percentage. It's the most feature-dense 10,000mAh bank in this group. We kept the Anker MagGo ahead of it because Anker's track record and owner history run longer, but it's a close call, and the detachable cord is a real advantage.

This is what our research turned up in the sizes travelers actually buy, not a survey of everything for sale. New power banks appear constantly and plenty of good ones never cross our path. Here's why the rest of this group didn't make the cut.

The EF ECOFLOW Rapid Pro Power Bank ($109.99) — The EcoFlow Rapid Pro goes toe to toe with the Anker Prime: 99.54Wh, 300W total across four ports, a 140W built-in USB-C cable, a 3.9-inch screen, and a 0-to-80-percent refill in about 20 minutes on 320W input. On paper it's the better-equipped of the two. In practice it's heavier than the Prime and bulkier in a bag, and owner feedback is more mixed — including reports that USB-C Power Delivery negotiation fails on certain ports with some laptops and hubs, and that it throttles once it warms up. If the attached 140W cable sells you, it's a reasonable buy. We'd take the Prime's steadier reputation.

The Anker Nano Magnetic Power Bank ($54.99) — The Anker Nano Magnetic is the genuinely slim one — a third of an inch thick, Qi2-certified at 15W, with graphene cooling that Anker says holds it under 104°F. It barely changes the shape of a phone, and it's a pleasure to carry. But 5,000mAh is roughly one charge of a modern flagship, which is thin for travel, and owners note it runs warm while you'd expect more capacity for what it costs. Buy it for a long day out rather than a trip. If you want magnetic and slim for travel, the MagGo or the INIU gives you twice the power in a similar footprint.

Keep it in your carry-on, always. The FAA requires spare lithium batteries and power banks in the cabin rather than checked bags, because nobody can reach a fire in the hold. Then check your airline's policy on using one in flight; several carriers and countries now restrict that even when the bank itself is fine to bring. Store it around half charged if you won't touch it for months, and keep it out of a hot car, since heat ages cells faster than use does. Use the cable the manufacturer includes if you want full wattage. And before any trip, search the CPSC recall list for your model — Anker pulled more than a million PowerCore 10000 units in the U.S. over fire and burn reports.

For this guide:

• We compared manufacturer specifications for every bank here — stated watt-hours, per-port wattage, input speed, weight and dimensions — and did the mAh-to-watt-hour math so the airline numbers line up.
• We read FAA and IATA guidance on carrying lithium batteries, along with CPSC recall notices, to separate the actual rules from marketing language like "TSA-approved."
• We also worked through owner feedback themes on each listing, looking for repeated complaints about heat, built-in cable failures, and charging that stops short of what's advertised.
• We read owner reviews on every listing, weighted toward the critical ones, because that is where the recurring failures show up.
• We have a systematic way of automatically fetching the latest prices, so the numbers on this page stay current.
• This is a research-focused guide, so the team may not own every product listed — though we often do own the top winners, which gives us extra context for the recommendations.
• We don't accept free products, and the retailer commission never changes which product we recommend.