GriffinReserve Power Bank 10000mAh

Medium power bank
10000mAh

£20Typical price

Test score

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This little black box is as unassuming as they come. It doesn’t come with any fancy extra features, but that doesn’t necessarily matter if it can keep your devices topped up when you’re on the go. So, does the Griffin Reserve Power Bank 10000mAh live up to its claimed capacity? Read our expert review to find out.

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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?
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KEY TEST RESULTS
Performance
Ease of use
Features

Jan 2024Last checked by Which?
Feb 2021First reviewed by Which?

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	Medium power bank
Claimed capacity	10000mAh
Width	8cm
length	10.5cm
Height	2.2cm
Weight	235g

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

Power
Power bank charging time
No. smart phone charges possible	2.2
No. Tablet charges possible	1.2

Connections
Input 1	micro USB
Input 1 specs	5V, 2A
Output 1	USB-A
Output 1 specs	5V, 2.4A
Output 2	USB-A
Output 2 specs	5V, 2.4A
Shared output	Yes
Max combined output	2.4A

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GriffinReserve Power Bank 10000mAh