Best Power Banks 2026

I travel with too many devices. Phone, earbuds, tablet, sometimes a laptop — and they all need charging. Over the past few months I've rotated through a dozen power banks to find the ones that actually deliver on their promises. Spoiler: the number on the box rarely matches what you get in practice.

Quick comparison

Anker Prime 20,000mAh

The Anker Prime is my daily carry. 200W output means it can charge a MacBook Air at full speed while simultaneously topping off my phone. The built-in display is genuinely useful — it shows real-time wattage, estimated time remaining, and battery temperature, so you're never guessing.

20,000mAh gives me about 4 full iPhone charges or one full MacBook Air charge with some left over. Recharging the bank itself at 100W takes about 45 minutes from empty, which is fast enough that I can top it off during lunch.

The form factor is surprisingly compact — roughly the size of a deck of cards, but denser. 500g is noticeable in a pocket but fine in a bag. Build quality is premium; the aluminum shell feels like it can take a beating.

UGREEN 25,000mAh 200W

UGREEN has been quietly making great charging products, and this power bank is their best yet. 25,000mAh at $80 undercuts the Anker Prime by $20 while offering 25% more capacity. Output matches at 200W, and I measured comparable charging speeds across all my devices.

The trade-off is size. It's noticeably larger and heavier than the Anker, and the digital display isn't as crisp. But if you're choosing between these two based on specs alone, UGREEN wins on value. The three USB-C ports (no USB-A) are a modern choice that I appreciate.

Baseus Blade 2

The Blade 2 is for people who hate carrying bulky power banks. It's shaped like a thin rectangle — roughly the dimensions of a small tablet — and slides into a laptop sleeve without adding noticeable bulk. 12,000mAh is enough for about 2.5 phone charges or a partial laptop top-up.

140W output through the primary USB-C port is enough to charge most thin laptops at a reasonable speed. I used it to keep my MacBook Air alive during a 4-hour flight, getting about 60% charge from the bank before it died. Not a full charge, but enough to finish my work.

Anker Nano 5,000mAh

This tiny thing has lived on my keychain for months. The built-in USB-C connector folds out and plugs directly into your phone — no cable needed. It's about the size of a lipstick tube and adds one full charge to an iPhone or roughly 80% to a Samsung flagship.

At $16, there's no reason not to own one. Toss it in your bag for emergencies. It won't charge your laptop, it won't fast-charge anything, but it'll keep your phone alive when you need it.

Shargeek Storm 2

The Storm 2 is the power bank for people who appreciate seeing how things work. The transparent case reveals the internal battery cells and circuitry, and the full-color IPS display shows individual port wattage, voltage, current, and temperature. It's nerdy and I love it.

Performance is solid if not exceptional. 100W output charges laptops at a moderate pace, and 25,600mAh gives you ample capacity. It's at 94.5Wh, which technically squeezes under the 100Wh airline limit, but I'd bring documentation just in case a gate agent questions it.

Buying tips

Match wattage to your devices. Check what wattage your laptop charger uses. If your laptop needs 67W, a 30W power bank won't cut it — the laptop will drain faster than it charges.

Real capacity vs rated capacity. A 20,000mAh bank delivers roughly 12,000-13,000mAh of usable charge due to voltage conversion losses. Plan accordingly.

Airline limits. Anything under 100Wh (roughly 27,000mAh) can fly in carry-on. Over 100Wh requires airline approval. Over 160Wh can't fly at all.

USB-C PD is non-negotiable. Any power bank you buy in 2026 should support USB Power Delivery. Skip anything that only offers USB-A output.

My picks

Phone-only charging: Anker Nano ($16). Laptop + phone: Anker Prime ($100) or the UGREEN ($80) if you want more capacity for less. Slim travel: Baseus Blade 2 ($60).

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Frequently asked questions

What capacity power bank do I actually need?

A 10,000 mAh power bank charges most smartphones 2 to 2.5 times. A 20,000 mAh bank provides 4 to 5 charges or one full laptop charge if it supports 45W or higher USB-C output. For day trips, 10,000 mAh is enough. For multi-day travel without reliable outlet access, 20,000 to 26,800 mAh covers multiple devices. Note that conversion losses mean real-world capacity is roughly 65 to 70% of the rated mAh.

How fast should a power bank charge my phone?

Look for 18W to 30W USB-C Power Delivery output to fast-charge modern smartphones. The Anker 733 and similar mid-range banks deliver 30W, which fully charges most phones in about 60 to 90 minutes. Some power banks support 65W or higher for laptops. For comparison, cheap 5W charging banks top off a phone in 3 to 4 hours versus 1 to 1.5 hours at 30W.

What makes a power bank good for travel?

Compact size relative to capacity, USB-C input and output, airline compliance (under 100Wh for most banks, or under 160Wh with airline approval), and pass-through charging that lets you charge devices while the bank itself recharges. MagSafe compatibility is a plus for iPhone users. Look for power banks that charge themselves in 2 hours or less so you are not stuck waiting at hotels.

Can I bring a power bank on a plane?

Power banks must go in carry-on luggage, never checked bags. The limit is 100Wh (about 27,000 mAh at 3.7V) without special approval. Most consumer power banks under 26,800 mAh fall within this limit. Banks between 100Wh and 160Wh require airline approval. Check the power bank's Wh rating on the label, not just mAh. Airlines enforce this strictly.

Can a power bank charge a laptop?

Only if the power bank outputs 45W or more USB-C Power Delivery. A laptop drawing 65W for heavy work will drain a power bank providing 45W, just more slowly than it otherwise would. For charging during sleep or light use, a 45W to 65W bank keeps most thin-and-light laptops topped up. Gaming laptops and power-hungry machines need 100W or higher, which most consumer power banks cannot provide.