By clicking a retailer link you consent to third party cookies that track your onward journey. If you make a purchase, Which? will receive an affiliate commission which supports our mission to be the UK's consumer champion.

EnergizerXP20004PD

Large power bank
20000mAh

£69.99View retailers

Test score

Lowest available price

£69.99Amazon

Sign up to unlock the full expert review

Interested in a larger power bank charger? The Energizer XP20004PD 20,000 mAh might catch your eye if you want a model with plenty of charging ports. But how easy is it to carry? Many large power banks fall at that hurdle. How well does it charge devices? Read our full review to find out.

pros

Content has been blurred out, please log in to view.

cons

What's included?

What is it?
What’s it like to use?
How well does it perform?
Should I buy it?

Full Access first month £5, then £10.99 per month, cancel at any time

KEY TEST RESULTS
Performance
Ease of use
Features

Mar 2024First 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	Large power bank
Claimed capacity	20000mAh
Width	5.3cm
length	11.9cm
Height	5.3cm
Weight	398g

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

Power
Power bank charging time
No. smart phone charges possible	3.7535512343125
No. Tablet charges possible	1.8195006183775

Connections
Input 1	USB-C
Input 1 specs	5Vdc - 3A9Vdc - 3A12Vdc - 3A (PD30W)15Vdc - 3A20Vdc - 2.25A (PD45W)
Output 1	USB-C
Output 1 specs	5Vdc - 3A9Vdc - 3A12Vdc - 3A 15Vdc - 3A20Vdc - 3.25A (PD65W)
Output 2	USB-C
Output 2 specs	5Vdc - 3A9Vdc - 3A12Vdc - 2.5A (PD30W)
Output 3	USB-A
Output 3 specs	5Vdc - 3A9Vdc - 2A12Vdc - 1.5A 10Vdc - 2.25A
Shared output	Yes
Max combined output	ns

Compare retailers

Prices updated daily

Prices are ordered from lowest to highest, irrespective of retailer rating or stock, and exclude any potential delivery costs. We are not able to show every possible retailer and cheaper prices may be available.

Amazon
In Stock£69.99

Suggested Alternatives

Anker

321 Power Bank PowerCore 5K

Small power bank
5200mAh

£19.99View retailers

Test score

Juice

1 + Power Bank 4000mAh

Small power bank
4000mAh

£13Typical price

Test score

Best cheap power banks for 2024
A portable power bank charger is a simple way to top up your gadgets on the go. Find out what key features to look for, along with some of the best cheap power banks we’ve tested.
Best portable power bank chargers
Power banks act as portable chargers for your devices, allowing you to stay topped up on the go – but they aren’t all made equal.
How we test portable power bank chargers
Which? rigorously tests portable power bank battery chargers to sort the bold claims from reality.

All portable power bank charger advice

EnergizerXP20004PD

Lowest available price