Anker Nano Power Bank (30W, Built-In Cable) Review: The Power Bank You Won’t Forget the Cable For

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Forgetting your charging cable is the most common reason a power bank ends up useless in your bag. The Anker Nano Power Bank (30W, Built-In USB-C Cable), model A1259, solves that by building the cable right into the body. It packs 10,000mAh, delivers up to 30W from the cable or the USB-C port, adds a USB-A port for older devices and shows the remaining battery on a small display.

It is one of Anker’s best-selling portable chargers on Amazon. Here is everything you need to know before buying one.

Note: this review is based on Anker’s official specifications, the Amazon listing and published independent reviews. We have not run our own lab measurements.

Quick Verdict

Best for: anyone who wants one pocketable power bank to top up a phone, earbuds or tablet, without carrying a separate cable.

Skip it if: you need to charge a laptop at full speed, you want wireless or magnetic MagSafe-style charging, or you need more than about two full phone charges.

Anker Nano Power Bank (A1259) Specifications

The Built-In Cable Is the Whole Point

The USB-C cable is permanently attached and doubles as a strap, so it tucks neatly along the side of the power bank. It does two jobs: it charges your devices, and it also recharges the power bank itself from any USB-C wall charger. That means you can leave every other cable at home for a day out.

You still get a separate USB-C port and a USB-A port, so you can charge up to three devices at once, for example a phone, earbuds and a smartwatch charger.

Charging Speed

With up to 30W from the cable or the USB-C port, the Nano can fast-charge iPhones, Samsung Galaxy phones and Pixels at close to their top wired speeds, and Anker says it can charge an iPhone to about 50% in roughly half an hour. It can also top up a tablet or a small laptop like a MacBook Air, although slowly.

Keep in mind that when you use several ports at the same time, the total output drops to 24W, shared between devices.

How Many Charges Will You Get?

A 10,000mAh power bank does not deliver its full rated capacity to your phone, because some energy is lost in conversion. In practice, expect around 1.5 to 2 full charges for most modern smartphones, more for small phones and earbuds, and less for large phones with very big batteries.

Recharging the Power Bank

Thanks to 30W input, the Nano goes from empty to about 50% in around 45 minutes with a compatible 30W USB-C charger. If you need a wall charger, our UGREEN Nexode Air 65W review covers a tiny GaN charger that can handle it easily.

Size, Weight and Travel

At 104 x 52 x 26 mm and 215 grams, it fits in a jacket pocket or small bag. A 10,000mAh battery is well below the 100Wh airline limit, so it is allowed in carry-on luggage on most flights. Always check your airline’s rules, and never pack power banks in checked bags.

Pros and Cons

Pros

• Built-in USB-C cable that also recharges the power bank
• Fast 30W output and 30W recharging
• Three outputs: cable, USB-C and USB-A
• Battery percentage display
• Compact and carry-on friendly

Cons

• Total output drops to 24W with several devices
• Not powerful enough to charge most laptops quickly
• No wireless or magnetic charging
• Built-in cable can’t be replaced if damaged

Final Verdict

The Anker Nano Power Bank with built-in USB-C cable is one of the most practical everyday chargers you can buy. It is small, fast, easy to recharge and impossible to leave without a cable. If you want a simple, reliable power bank for your phone and accessories, it is an easy recommendation.

Check the current price of the Anker Nano Power Bank on Amazon

Building a charging setup for your desk? Read our UGREEN Nexode 100W 6-in-1 Charging Station review.

Frequently Asked Questions

How many times can the Anker Nano Power Bank charge an iPhone?

Usually around 1.5 to 2 full charges for a modern iPhone, depending on the model and battery size.

Can the built-in cable recharge the power bank?

Yes. The built-in USB-C cable works both ways, so you can plug it into a USB-C wall charger to recharge the power bank.

Can I bring the Anker Nano Power Bank on a plane?

Yes, in carry-on luggage on most airlines, since 10,000mAh is well below the 100Wh limit. Check your airline’s rules before flying.

Can it charge a laptop?

It can slowly top up small USB-C laptops at up to 30W, but it is designed mainly for phones, tablets and accessories.

Does it support wireless charging?

No. It charges devices through the built-in cable, the USB-C port and the USB-A port only.