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I tested the Anker 20,000mAh 87W Power Bank and it has plenty of power, but it might be too much for some

Will you need all this power in a small form?

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Anker 20,000mAh 87W Power Bank leaning on plinth on desk, with pink background
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(Image: © Future)

TechRadar Verdict

The Anker 20,000mAh 87W Power Bank has a high output, which makes it more than sufficient for charging laptops and the like. It has a very sturdy build, and includes an inbuilt USB-C cable for added convenience. Two extra ports expand its versatility, and the price is reasonable considering what’s on offer here. It might be overkill for many, but if you do need all that power, the Anker 20,000mAh 87W Power Bank is a great choice for on-the-go top-ups.

Pros

  • +

    Large power output

  • +

    Well-made

  • +

    Integrated USB-C cable

Cons

  • -

    Some rivals are smaller

  • -

    Unnecessarily powerful for many

  • -

    Display lacks detailed information

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Anker 20,000mAh 87W Power Bank: review

The Anker 20K 87W power bank has a large capacity and power output, as well as an inbuilt USB-C cable for ease of use. It’s a sleek-looking brick, although it’s quite big. Thankfully, it’s not too thick or too heavy, both of which help to make it more portable than it otherwise would be.

It features a small screen that displays the battery life as a percentage, which is bright and clear, making it easy to glance at. There’s also a relatively large power button next to it, which is very accessible owing to its size.

True to many of Anker’s products, it feels solidly constructed, equal in durability to the best power banks. This extends to the inbuilt USB-C cable, which Anker claims has 11lbs of pulling resistance, and is rated for over 10,000 bends and 5,000 twists during its lifetime.

It folds away neatly, sitting flush with the side panel, and it also feels secure in this housing, so I wasn’t concerned it would come loose or expose the jack to damage. What’s more, the cable is still easy to unsheathe when needed.

However, it isn’t that long, which, given the overall size of the bank itself, can make it a little awkward to use. It also has to be twisted around when connecting to devices in a way that feels unnatural, since the cable is flat rather than cylindrical.

In addition to this integrated cable, the Anker 20,000mAh 87W Power Bank also features a USB-C port, which is capable of input and output (as is the cable), and a USB-A port, which is output only.

The Anker 20,000mAh 87W Power Bank provides 87W of power in total, with a maximum of 65W for single-port charging, which is more than enough to charge large devices, including many modern laptops. It managed to charge my Google Pixel 7a, which has a 4,385mAh battery, in about two hours, which is respectable.

In the process, it lost 30% of its battery life, which means you should be able to get at least three charges out of it, which is acceptable, although some other 20,000mAh banks I’ve tested previously appear to retain slightly more in the tank than this.

Still, the Anker 20,000mAh 87W Power Bank is reasonably priced considering its high power output, build quality, and integrated cable. However, it might not represent great value unless you intend on charging very power-hunger devices; even many modern laptops don’t need 65W to charge quickly. But, if you do, the Anker 20,000mAh 87W Power Bank is a very solid portable and convenient option.

Anker 20,000mAh 87W Power Bank leaning on plinth on desk, with pink background

(Image credit: Future)

Anker 20,000mAh 87W Power Bank: price & specs

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Price

$69.99 / £49.99 / AU$119.99

Capacity

20,000mAh

Total wattage

87W

Number of ports

3

USB-C

2 (1 x inbuilt cable)

USB-A

1

Wireless charging

No

Weight

15.5oz / 439g

Power-to-weight

46mAh/g

Close-up of ports on Anker 20,000mAh 87W Power Bank, on plinth on desk, with pink background

(Image credit: Future)

Should I buy the Anker 20,000mAh 87W Power Bank?

Buy it if…

You want plenty of power
87W is a lot of power, meaning you should be able to charge many laptops and other similarly sized devices comfortably.

You want a solid build
The Anker 20,000mAh 87W Power Bank certainly feels durable, and even the housing for the integrated cable seems to offer plenty of security.

Don't buy it if…

You want something small
The Anker 20,000mAh 87W Power Bank is a sizable unit, and although it’s admirably thin, there are smaller 20K power banks out there.

You don’t need all that power
The 87W total power is probably too much for many, and even the 65W single-charging capability is overkill for many modern laptops.

Anker 20,000mAh 87W Power Bank review: Also consider

INIU P51L-E1
If you’re looking for a bank with the same capacity as the Anker 20,000mAh 87W Power Bank but in a much smaller package, the INIU P51L-E1 could be the ideal solution. It too features a built-in USB-C cable, but also includes a flashlight for even better practicality. However, it has a lot less power (22.5W), so it’s really only suitable for devices no bigger than iPads and the like. Read our full INIU P51L-E1 review.

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Lewis Maddison
Lewis Maddison
Reviews Writer

Lewis Maddison is a Reviews Writer for TechRadar. He previously worked as a Staff Writer for our business section, TechRadar Pro, where he gained experience with productivity-enhancing hardware, ranging from keyboards to standing desks. His area of expertise lies in computer peripherals and audio hardware, having spent over a decade exploring the murky depths of both PC building and music production. He also revels in picking up on the finest details and niggles that ultimately make a big difference to the user experience.

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