Charmast CMA Mini USB-C Power Bank, 5000mAh

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Product guide

Charmast CMA Mini USB-C Power Bank, 5000mAh

Mini: Charmast CMA is a compact 5000mAh power bank with a built-in USB-C connector for topping up compatible USB-C phones without carrying a separate charging cable. Its small claimed capacity suits emergency or short-trip backup rather than buyers seeking a high-capacity multi-charge pack.

At a glance

Built-in USB-C connector is intended to charge compatible phones directly, without a separate cable.
The listing claims 20W PD and 18W QC fast-charging support, plus compatibility with other fast-charge protocols.
Charmast estimates around 0.8–1.2 phone charges from the 5000mAh capacity, depending on the phone.

Price

£13.59Save 15%

Reference price: ~~£15.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Built-in USB-C connector reduces the need to carry a separate phone-charging cable.
5000mAh capacity and a pocket-sized design are suited to lightweight emergency backup.
Rechargeable battery and claimed fast-charge protocol support offer flexibility across compatible USB-C devices.

Cons

The 5000mAh capacity is limited for extended trips or repeated phone top-ups.
The listing says this CMA version is for USB-C Android phones and not for iPhone.

Technical specifications

18 specifications

Identity
Brand	charmast
Model	galaxy,galaxys10
Model number	CMA
Colour	Black

Power and battery
Battery capacity	5000 Milliamp Hours
Battery cell type	Lithium Polymer
Power configuration	Corded Electric
Voltage	12 Volts
Amperage	1.6 Amps
Battery charge time	1.5 Amp Hours
Battery	1 Lithium Polymer batteries required. (included)
Number of ports	2

Connections and compatibility
Connector type	Mini USB, USB Type C
Compatible devices	Smartphone
Reusability	Rechargeable

Dimensions and weight
Dimensions listed	4 x 4 x 25 millimetres
Weight listed	92 Grams
Battery weight	37 Grams

What to know before buying

Listing details to confirm

The listing details are inconsistent: the title and feature copy claim 20W PD and 18W QC, while other details give 12 Volts, 1.6 Amps, two ports and a 1.5 Amp Hours charge-time entry. Listed dimensions of 4 x 4 x 25 millimetres also differ from the feature copy's 77.2 × 35.0 × 24.7 mm, and model information is given as both CMA and galaxy,galaxys10. Confirm the selected version's connector, charging output, dimensions and phone compatibility before buying. The claimed 1.5-hour recharge specifies a 9V-2A charger.

Who is it for?

A good fit for

USB-C Android phone owners wanting a small backup charger for commuting or short outings.
Buyers who value a built-in charging connector and do not want to pack a separate cable.

Less suited to

iPhone users, as the listing says this CMA version is not for iPhone.
Buyers needing a high-capacity pack for several full charges or extended time away from a mains supply.

Charmast CMA Mini USB-C Power Bank, 5000mAh · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 2,756 ratings

5 stars64%64%
4 stars16%16%
3 stars7%7%
2 stars4%4%
1 star9%9%

Customer feedback highlights the compact size, portability and convenience for travel, while reported charging speed and reliability are mixed. Some customers say it charges a phone fully, while others report only a partial charge or that the unit stops working. Durability concerns and divided views on value also appear. That feedback matters for a small 5000mAh backup pack: the form factor suits carrying for occasional top-ups, but reports do not establish consistent output or long-term reliability.

Positive themes

Customers describe it as compact, portable and convenient to carry for travel.

Negative themes

Some customers report durability problems, including units breaking within five months.

Mixed feedback

Reports on charging speed and reliability vary, from full phone charges and good operation to partial charging or the unit stopping working.
Opinions on value are divided.

Frequently asked questions

Does this power bank work with iPhones?

The listing says this CMA version is for Android phones with a USB-C interface and is not for iPhone. Check connector and device compatibility before ordering.

Does it include a charging cable?

The power bank is described as having a built-in USB-C connector for charging a phone directly, so a separate phone cable is not needed for that connection. The package contents are not specified.

How many phone charges can 5000mAh provide?

The listing estimates around 0.8–1.2 charges for an Android phone. Actual results depend on the phone and usage.

How long does it take to recharge the power bank?

The feature copy claims about 1.5 hours using a 9V-2A quick charger. Other listed charging details are inconsistent, so confirm the required input and charger for the selected version.