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Product guide

INIU BI-B5 20,000mAh 22.5W Power Bank

INIU BI-B5 is a 20,000mAh portable power bank with a claimed maximum output of 22.5W and three charging ports. Its USB-C input and output and LED display suit buyers who want to recharge several phones or small devices on the go, though the listed weight is 365g.

At a glance

Three output ports are claimed to let the power bank charge three devices at once.
USB-C is described as supporting both input and output, alongside two USB-A outputs.
The LED display is intended to show the power bank's charge status.
Manufacturer claims include a maximum 22.5W output and PD3.0 and QC4.0 support.

Price

£22.40Save 32%

Reference price: ~~£32.99~~

Price checked: 12 Nov 2026

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Often bought together

INIU Power Bank, 20000mAh Fast Charging Portable Charger, 22.5W Powerbank with USB Type C Input & Output, Battery Pack PD3.0

£27.53

Pros and cons

Pros

20,000mAh stated capacity and three ports make it suited to carrying power for multiple devices.
USB-C input and output offers one port for recharging the bank and charging compatible devices.
The LED display provides a visible charge-status readout.
The listing states a three-year product warranty.

Cons

At 365g, it adds noticeable weight to a travel bag or pocket.

Technical specifications

25 specifications

Identity
Brand	INIU
Model	BI-B5
Colour	White

Power and battery
Battery capacity	20000 Milliamp Hours
Energy capacity	20000mAh/ 74Wh
Power configuration	Battery Powered,Corded Electric
Battery type	Lithium Polymer
Battery quantity	1 Lithium Polymer batteries required. (included)
Maximum input	20W(max)
Maximum output	22.5W(max)
Amperage	3 Amps
Listed charging time	30 Minutes
Recharge cycle	1000+ times
Standby time	12 months

Ports and features
Connector type	Output: USB-C, USB-A*2, USB Type C
Port count	3
Special features	22.5W Fast Charging 20000mAh Powerbank, USB C In & Out, with LED Display
Portability	Yes
Rechargeable	Rechargeable

Dimensions and installation
Dimensions listed	13.5 x 7.1 x 2.5 centimetres
Weight listed	365 Grams
Battery weight	320 Grams

Other details
Warranty type	Limited
Product warranty	3 Years
Country of origin	China

What to know before buying

Listing details to confirm

Listing details are inconsistent about dimensions: one entry gives 13.5 x 7.1 x 2.5 centimetres while another gives 13.4*7.1*2.5cm. The connector description repeats USB-C while also listing three ports. A separate 30-minute battery charge-time field conflicts with the stated six-hour full recharge claim using 20W input, and the 30-minute phone and tablet charging figures are manufacturer claims with no device conditions specified. Confirm the relevant listing details before purchase.

Who is it for?

A good fit for

Travellers who want a stated 20,000mAh capacity and can accommodate a 365g charger.
People who want to charge up to three devices at once, as claimed, using USB-C and USB-A connections.
Buyers seeking a power bank with an LED charge display and USB-C input and output.

Less suited to

Anyone prioritising the lightest possible pocket power bank.
Buyers who need confirmed, device-specific charging times or a clearly specified connector configuration.

INIU BI-B5 20,000mAh 22.5W Power Bank · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 780 ratings

5 stars77%77%
4 stars13%13%
3 stars4%4%
2 stars1%1%
1 star5%5%

Customer feedback highlights perceived quality, design, portability, battery life and performance, with some people valuing it for holiday journeys. The reported long battery life and charging performance may appeal to buyers seeking the listed 20,000mAh capacity, but these experiences do not establish a guaranteed number of charges. Views on weight differ, which matters for a product listed at 365g, and performance feedback is mixed, including reports of units stopping after two months.

Positive themes

Customers describe the power bank as good quality and attractive, and praise its portability for travel.
Some customers report long battery life and strong charging performance.

Negative themes

Some customers report that their unit stopped working after two months.

Mixed feedback

Weight feedback differs, with some customers finding it not bulky and others considering it slightly heavy.
Performance feedback is mixed.

Frequently asked questions

How many devices can this INIU power bank charge at once?

The listing claims its three-port design can charge three devices simultaneously. Actual charging speed may depend on the connected devices and port use.

Does the BI-B5 have USB-C input and output?

The listing describes USB-C input and output. Its connector details also repeat USB-C while listing two USB-A ports, so confirm the exact port arrangement in the selected listing.

How quickly does the power bank recharge?

A manufacturer description claims about six hours for a full recharge with 20W USB-C input. A separate listing field says 30 minutes, so the stated timings conflict.

What is the listed weight?

The technical details list 365 Grams. Customer feedback is mixed on weight, with some describing the bank as not bulky and others finding it slightly heavy.