Rank #6 in Best 10000mAh Power Bank 2026: 8 Ranked, and the Numbers That Do Not Add Up
Anker PowerCore Slim 10,000mAh USB-C Power Bank
Price and rating as shown on Amazon when we collected them. Both change.
The Anker PowerCore Slim 10,000mAh (model A1229) comes in at number six in our guide to 10,000mAh power banks. At £17.99 it is the cheapest of the eight, and it is the most reviewed of them too, with 4.5 stars from 3,141 ratings — 75 of the 100 ratings shown in its histogram are five-star.
Its own listing is where the numbers get interesting. The first bullet calls it "one of the slimmest and lightest 10,000mAh portable chargers on the market", and the second says it weighs "a mere 8.6 oz" — about 244g. The spec table a few lines further down gives the item weight as 250g, which makes it the heaviest of the eight in this guide. The same table answers "Portable: No" and "Is Product Cordless: No", and gives the power source as "Corded Electric", on a product whose whole job is being carried. Everything on this page comes from the Amazon listing and its customer reviews; we have not weighed, dropped or charged this power bank ourselves.
How those 3,141 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £17.99 |
|---|---|
| Customer rating | 4.5 out of 5 from 3,141 ratings |
| Battery capacity | 10,000 mAh |
| Item weight (as listed) | 250 g, against "a mere 8.6 oz" (roughly 244g) in the bullet points |
| Portable (as listed) | No |
| Is Product Cordless (as listed) | No |
| Power source (as listed) | Corded Electric |
| Voltage and amperage (as listed) | 5V at 2.4A, which is 12W |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Very nice battery pack. I've bought one before and it has never let me down. Don't hesitate to buy it. The sizing is good, it's slim, it can fit into any bag, purse, even a coat pocket. The battery pack is literally as big as my phone (iPhone 15). Very easy to turn on and off, to charge. It charges pretty fast. Very useful, I recommend to all.”
Verified purchase“Charges as phone at a reasonable rate. Light weight easy to slip into a pocket. With several socket sizes”
What it is up against
The rivals it was ranked against in Best 10000mAh Power Bank 2026: 8 Ranked, and the Numbers That Do Not Add Up.
Questions people ask
How much does the Anker PowerCore Slim 10,000mAh cost?
The listing price is £17.99, the lowest of the eight power banks in this guide.
How heavy is the Anker PowerCore Slim?
Anker's bullet points say it weighs "a mere 8.6 oz", which is about 244g. The spec table in the same listing gives the item weight as 250g.
Is the Anker PowerCore Slim portable?
The listing's own spec table says "Portable: No" and "Is Product Cordless: No", and lists the power source as "Corded Electric". The first bullet describes it as one of the slimmest and lightest 10,000mAh portable chargers on the market.
How is it rated by buyers?
4.5 out of 5 from 3,141 ratings. In the rating breakdown, 75 of the 100 ratings shown are five-star and four are one-star.
What does the USB-C port do, and how fast is it?
Anker says the USB-C port supports both input and output, so the same port recharges the bank and charges your phone. The listing gives 5 volts at 2.4 amps, which works out at 12W.
What is in the box and what warranty comes with it?
PowerCore Slim 10000, a USB-C to USB-C cable, a welcome guide, an 18-month warranty and customer support.
Comments
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