Belkin UltraCharge 20,000mAh power bank in sand with USB-C cable

Rank #10 in Best 20000mAh Power Bank: 10 Ranked by Real Charge Counts

Belkin UltraCharge 20,000mAh Power Bank, USB-C Cable

£49.99 4.7 from 57 Amazon ratings
Check price on Amazon

Price and rating as shown on Amazon when we collected them. Both change.

The Belkin UltraCharge 20,000mAh Power Bank is the tenth entry in this guide. It is the only bank here that arrives with its USB-C cable attached to the body rather than loose in the box — one buyer describes the braided lead wrapping into a loop that doubles as a carry handle. Belkin quotes a 45W maximum output, a 20,000mAh cell that it says adds 114 hours of playback, three-device charging and a digital display for the remaining charge. The listing price is £49.99.

What stands out on this page is the ratings box. It shows 4.7 out of 5 from 57 ratings, while the star breakdown printed alongside it reads 5, 23 and 72. Those three figures total 100, not 57. The same listing disagrees with itself on ports, too: the spec field lists the number of ports as 2, while the bullet headed "charge 3 devices at the same time" describes a built-in USB-C cable, a USB-A port and a USB-C port with 22.5W shared output, against the 45W maximum claimed elsewhere. The capacity field reads only 20000, with no unit, and no weight is given for the pack anywhere in the advert. Everything on this page comes from the Amazon listing for this model, not from testing we have carried out.

How those 57 ratings break down

An average hides its own shape. This is the spread behind the 4.7 stars.

5 star
72%
4 star
23%
3 star
5%
2 star
0%
1 star
0%

Specification

Exactly as published on the Amazon listing, field for field.

Price £49.99
Rating 4.7 out of 5 from 57 ratings
Battery Capacity (as listed) 20000 (no unit stated)
Max output 45W
Shared output, three devices 22.5W
Number of Ports (as listed) 2
Voltage / Amperage (as listed) 15 Volts / 3 Amps
Amazon Best Sellers Rank 582 in Mobile Phone Portable Power Banks

What buyers actually say

Quoted from customer reviews on Amazon

“This Belkin power bank is pretty good for the price, 20,000 mAh and 45W, which is still fast. Belkin has bigger and faster ones, but for about £50, this one's a steal and great for travel, even on planes. And with Balkin's price difference from 20000 mah to 10000 mah, being just under £10. This 20000 mah is a steal!It has a built-in 20cm long nylon braided USB-C cable that wraps around, plus a USB-C and a USB-A port, so you can charge three things at once. 10,000 mAh is plenty and should last a 10-hour flight from the UK to the Indian Ocean, plus our layover which we plan to take soon. It can fash, charge an iPhone 17 pro from 0 to 50% in 22 minutes. And it provides a 114 hours of battery life on average.We like the digital display to check the charge, and with the layover, I can just plug it into a lounge charger to top it up. It comes pre-charged, which is awesome – I can grab it a day before my trip and not worry about charging it beforehand.Compared to others, it's not super cheap, but it's made to work well and last.We've been buying Belkin for years. Their offerings are tough, lasts a long time, and their warranty and customer service are great, which keeps me coming back when I need something reliable.This version does not charge my devices wirelessly, but Belkin make models which do.We also like that it doesn't get too hot when charging multiple devices.It comes fully assembled in a nice Belkin box that protects the power bank and i can tell from the workmanship and the feel that this device is built to last has a slick rounded corners design and a nice shade of ivory for its casing.Unlike some other brands, this is Belkin; they promise reliability and durability and offer a great guarantee, and this is a solid little device.5 stars”

Wilde's Cabbage

“Belkin, as always, offers great quality. I own a number of Belkin products and you can nearly always rely on them to be well-made and reliable. This one is no different. The build quality is good - Yes, it's made from plastic, but it feels sturdy and made to last.All of the components are well presented. In the package, you get the 20 000mAh battery pack and a built in USB C lead. When stowed, the cable hangs out the top of the battery pack and forms a loop. I'm not entirely sure if this is designed to be used to hang the battery pack from. If it is, it means that you wll be putting a lot of stress on the built in lead. It seems like a strange design choice. Upon checking the listing, it does say that this can be used as a carry strap. Personally, I won't be doing that. The battery pack curently comes in at £49.99. That's pretty pricey for a powerbank. You can certainly get cheaper powerbanks.On the powerbank itself, there is a numerical readout, from 100 to zero. Just press the power button and the percentage left will show on the small display. As well as the built in lead, you also get two USB ports on the powerbank - one USB A and one USB C. The 20000mAh capacity is huge. Most of the power banks that I own are 10 000mAh. This one is actually not much bigger than Belkin's 10 000mAh power bank, which I also own.”

West Country Will

What it is up against

The rivals it was ranked against in Best 20000mAh Power Bank: 10 Ranked by Real Charge Counts.

Questions people ask

How many devices can the Belkin UltraCharge 20K charge at once?

The bullet says three — the built-in USB-C cable, a USB-A port and a USB-C port — with 22.5W shared between them. The spec field for the same model lists the number of ports as 2.

What is the maximum output of this power bank?

45W, which Belkin says will fast charge smartphones and tablets and can charge a MacBook Air up to 45W.

Does the Belkin UltraCharge come with a cable?

Yes. A braided USB-C cable is built into the power bank, and the included components field lists the Belkin UltraCharge Power Bank 20K / 45W. No separate cable is listed.

How much does the Belkin UltraCharge weigh?

The listing gives no weight for this model, so there is no figure to set against the 20,000mAh claim.

What does Belkin say the 20,000mAh battery delivers?

The bullet claims an extra 114 hours of playback, without naming the device that figure refers to. The capacity spec field reads 20000 with no unit.

What warranty does the Belkin UltraCharge carry?

A limited warranty. The special features field also cites a £1500 Connected Equipment Warranty and Belkin SmartProtect, described as a 12-point safety system with dual-chip protection and intelligent temperature control.

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