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BelkinBoost Charge USB-C PD Power Bank 20K

Large power bank
20000mAh

£60View retailers

Test score

Lowest available prices

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The Belkin Boost Charge USB-C Power Bank 20K has twin output ports so you can charge two devices at the same time. But is its capacity as large as the manufacturer claims or will it leave you with a device that’s not fully topped up? Read our full review to find out the results of the Which? lab test.

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What's included?

What is it?
What’s it like to use?
How well does it perform?
Is there anything else I should know?
Should I buy it?

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KEY TEST RESULTS
Performance
Ease of use
Features

Dec 2022Last checked by Which?
Sept 2021First reviewed by Which?
Apr 2020Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test portable power bank chargers

5 Mar 2024

Performance

Overall
Capacity - actual v claimed
Efficiency
Power bank charging time
Device charging time

How we test performance

How long does the power bank take to charge? How quickly will it charge your devices? And does it deliver on the amount of power that the manufacturer says it will?

Ease of use

Overall
Portability
Capacity and charging indicators
Sockets

How we test ease of use

Are the sockets well marked and far enough apart? Does the capacity indicator work properly? And how easy is it to carry around? We weight these results so that portability is more important in small power banks, and less important in large power banks

Features

How we test features

How many outputs does it have? Does it have any special features that let it charge faster? Does it have wireless? Can you charge this power bank and your devices at the same time?

General
Type	Large power bank
Claimed capacity	20000mAh
Width	7.8cm
length	15.8cm
Height	2.8cm
Weight	449g

Features
Pass through charging	No
Power delivery	Yes
Wireless charging	No
Display type	4 LED indicators show battery power level
Accessories included	Short USB-C to USB-C lead

Power
Power bank charging time
No. smart phone charges possible	4.1
No. Tablet charges possible	2.4

Connections
Input 1	USB-C
Input 1 specs	5V, 3A9V, 3A12V, 2.5A15V, 2A20V, 1.5A
Output 1	USB-C
Output 1 specs	5V, 3A9V, 3A12V, 2.5A15V,2A20V, 1.5A
Output 2	USB-A
Output 2 specs	5V, 2.4A
Shared output	Yes
Max combined output	30W

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BelkinBoost Charge USB-C PD Power Bank 20K

Lowest available prices