For most travelers, a slim 10,000mAh power bank (like the Anker PowerCore 10000) is the sweet spot — about two phone charges, pocketable, and flight-legal in carry-on. Step up to 20,000–25,000mAh with fast USB-C if you carry a laptop or charge several devices, and consider a magnetic bank if you're on iPhone.
What to look for
- Capacity (mAh) — 10,000 for a phone, 20,000–25,000 for laptops and longer gaps between outlets.
- Charging speed — USB-C Power Delivery (PD) fast-charges phones and laptops; plain USB-A is slow.
- Size & weight — more capacity means more bulk; carry the least you need.
- Ports — USB-C in/out is essential now; a spare USB-A helps for older cables.
- Flight rules — must go in carry-on; keep it under 100Wh (~27,000mAh) to avoid airline approval.
How we choose: based on published specs and the patterns across many owner reviews — what charges reliably and lasts — not lab testing. See how we choose.
Our picks by use
| Power bank | Best for | Capacity | Notable | Price |
|---|---|---|---|---|
| Anker PowerCore 10000 | Everyday carry | ~10,000mAh | Pocketable | $ |
| Anker 737 (24K) | Big trips / laptops | ~24,000mAh | 140W USB-C | $$$ |
| Anker MagGo | iPhone / wireless | ~10,000mAh | Magnetic MagSafe | $$ |
| INIU Portable Charger | Value | ~10–20,000mAh | Cheap & slim | $ |
Slim, light, and dependable — enough to recharge a phone a couple of times. The default carry for day trips and flights.
- Slim, pocketable
- Reliable, a couple of phone charges
- Not enough for a laptop
A 24,000mAh bank with fast 140W USB-C that tops up a laptop, tablet, and phone — for long-haul travel and working on the road.
- Huge capacity
- Fast 140W USB-C — charges laptops
- Heavy and bulky
- Premium price
Magnetic wireless charging that clicks onto a recent iPhone and charges while you scroll — the tidiest option for Apple users.
- Snaps on magnetically
- Wireless, no cable
- Slower than wired
- iPhone-focused
A long-time budget favorite — slim, dependable charging for very little money when you just need a spare.
- Cheap
- Reliable, slim
- Less premium feel
Pack it right
Keep your power bank in your carry-on (never checked), charge it the night before, and pair it with a good travel adapter. See more of the travel accessories that earn their space.
FAQ
What size power bank do I need for travel?
For a phone, a 10,000mAh bank gives roughly two full charges — plenty for a day out or a flight. For multiple devices or a laptop, step up to 20,000–25,000mAh with fast USB-C. Bigger means heavier, so match capacity to how long you're away from an outlet.
Can you take a power bank on a plane?
Yes — but only in your carry-on, never checked luggage, because of the lithium battery. Most consumer power banks (under 100Wh, which covers up to roughly 27,000mAh) are fine without airline approval. Banks between 100–160Wh need airline permission; above that are banned.
How many times will a 10,000mAh power bank charge my phone?
Usually about 1.5–2 full charges for a typical phone, since some capacity is lost to heat and conversion. A 20,000mAh bank roughly doubles that. Battery size varies by phone, so treat it as a guide, not a guarantee.
Are magnetic (MagSafe) power banks worth it?
For recent iPhones, yes if you value convenience — they snap on and charge wirelessly with no cable, so you can keep using the phone. The trade-offs are slower charging than a cable and a higher price. Android users are better served by a standard USB-C bank.
What's the best power bank for international travel?
A 20,000mAh+ bank with fast USB-C Power Delivery covers phone, tablet, and most laptops between outlets, and pairs well with a universal travel adapter. Keep it in your carry-on, and check it's under 100Wh so it flies without airline approval.
