The Best Portable Chargers and Power Banks

A good power bank turns a low-battery panic into a non-event. The right one depends on what you need to charge and how much weight you're willing to carry.

Why you should trust us

Nivef guides are written to answer one question clearly: which one should you buy? We compare specifications and prices, read long-term owner reviews, check warranty and customer-support policies, and use products hands-on wherever possible. Manufacturers never pay for placement, and they don't see our guides before they're published. Read more about how we test.

Who this is for

These picks are for anyone who travels, commutes, or spends long days away from an outlet. If you only need a small top-up, a slim 10,000mAh model is plenty.

How we picked

Here's what we looked for:

• Real-world capacity close to the advertised rating
• USB-C Power Delivery for fast charging
• Enough output to charge a laptop (for larger models)
• A compact, pocketable design
• Safety certifications and protection circuits
• Airline-friendly capacity (under 100Wh)

Our picks in detail

Our pick

Anker Zolo Power Bank 20K

A good balance of capacity, speed, and price, with a built-in USB-C cable.

A 20,000mAh battery can recharge most phones three or more times, and the built-in cable means you're never stuck without the right cord. Fast USB-C charging makes it useful for tablets, too.

What we like

• Built-in USB-C cable
• Plenty of capacity
• Fair price

Flaws but not dealbreakers

• Heavier than a 10K battery

Check price →

Most pocketable

INIU Portable Charger 10000mAh

A slim, light battery that slips into a pocket and fully charges most phones twice.

For daily carry, a slim 10,000mAh battery is the sweet spot. INIU's model is light, inexpensive, and supports fast charging over USB-C.

What we like

• Slim and light
• Inexpensive
• Fast USB-C charging

Flaws but not dealbreakers

• Not enough for laptops

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For laptops

Anker Prime Power Bank (26,250mAh)

High-output charging for laptops, with a display that shows exactly what's happening.

If you need to charge a laptop, you need high USB-C output. Anker's Prime line can charge a laptop and phone at the same time, and the screen shows remaining capacity and charging speed.

What we like

• Charges laptops quickly
• Helpful display
• Multiple ports

Flaws but not dealbreakers

• Heavy
• Expensive

Check price →

For iPhone

Anker MagGo Power Bank (10K)

Snaps onto the back of a MagSafe iPhone for cable-free charging.

Magnetic batteries are the most convenient way to charge an iPhone on the go. The MagGo attaches firmly and has a fold-out stand for watching video.

What we like

• No cable needed
• Built-in stand
• Strong magnets

Flaws but not dealbreakers

• Wireless charging is slower and less efficient

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What to look for

Capacity vs. weight

10,000mAh is about two phone charges in a pocketable size. 20,000mAh and above adds noticeable weight.

Watts matter

For phones, 20W is plenty. For laptops, look for 45W to 100W USB-C output.

Flying with batteries

Power banks belong in carry-on luggage. Most airlines allow batteries under 100Wh without approval.

Frequently asked questions