# Charmast C2065 20,000mAh Power Bank, 22.5W

Charmast C2065 is a 20,000mAh portable power bank with four built-in cables, a digital display and a claimed maximum output of 22.5W. Its integrated leads reduce the need to carry separate cables, while the listed 340g weight and multiple dimensions are worth considering if pocketability is a priority.

- [Original product page](https://bargainpostbox.co.uk/product/charmast-c2065-20000mah-power-bank)
- [View offer](https://bargainpostbox.co.uk/visit/charmast-c2065-20000mah-power-bank)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: charmast
- Model: C2065
- Category: Electronics > Electronics Accessories > Power Banks
- Price: 22.09 GBP
- Previous price: 25.99 GBP
- Discount: 15%
- Price checked: 2026-11-14T19:29:54.669Z
- Rating: 4.4 / 5
- Reviews: 5188

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Four built-in cables and four additional ports are listed. The feature copy claims charging up to six devices at once.
- A digital display is claimed to show remaining charge as a percentage.
- The manufacturer claims up to 22.5W output, with fast-charging support depending on the cable, port and compatible device.
- The listing says to enable low-current mode for headphones and watches.

## Pros

- Four integrated cable types can reduce the need to carry separate charging leads.
- The claimed 20,000mAh capacity and multi-device connections suit longer days or charging several gadgets.
- The digital percentage display gives a more detailed charge indication than a simple multi-dot gauge.

## Cons

- At the listed 340g, it may feel bulky for buyers prioritising a light, pocket-sized charger.
- The product information says it is not suitable for charging laptops.

## Specifications

### Identity
- Brand: charmast
- Model: C2065
### Power and battery
- Capacity: 20000 Milliamp Hours
- Maximum output power: 22.5W
- Voltage: 9 Volts \(DC\)
- Power configuration: Corded Electric
- Cell type: Lithium Polymer
- Rechargeable: Rechargeable
### Connections and features
- Cables and ports: 4 Built-in Cables:USB-C,for iPhone,Micro USB,USB-A, 4 Ports:USB-C\*1+USB-A \*2+Micro USB \*1
- Number of ports: 4
- Features: Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection
### Dimensions and physical details
- Colour: Blue-20000mAh
- Dimensions listed: 16 x 7.2 x 1.9 centimetres
- Weight listed: 340 Grams
- Additional dimensions listing: 15.4L x 7.3W x 2.2Th centimetres
- Battery weight: 334 Grams

## Before you buy

- The manufacturer says small devices such as headphones and watches need low-current mode. It also says the bank may become warm during use and advises stopping use if temperature exceeds 45°C.
- The manufacturer says to carry it in cabin baggage and not checked baggage. Its stated phone charge count depends on device and usage, and delivered capacity is lower than the nominal battery capacity due to conversion losses.
- Listing details are inconsistent: the title and specifications state four ports, the connector description gives a four-port layout, while feature copy calls the four built-in cables plus four extra ports a total of eight connections and claims six devices can charge at once. Dimensions are listed as both 16 x 7.2 x 1.9 centimetres and 15.4L x 7.3W x 2.2Th centimetres, and the overall and battery weights differ. Confirm the selected version and connection layout before buying.

## In the box

- Power adapter ×1 (Included)
- Travel pouch ×1 (Included)
- User manual ×1 (Included)

## A good fit for

- People who want charging cables integrated into a multi-device power bank.
- Travellers or commuters who prefer a digital remaining-charge display and higher stated capacity.
- Buyers charging phones and small personal devices rather than laptops.

## Less suited to

- Anyone seeking a very light or compact pocket charger.
- Anyone who needs a power bank for laptop charging.
- Buyers who need a firmly established port count or exact dimensions without first confirming the selected listing.

## Customer feedback

Customer feedback highlights convenience from the built-in cables and the ability to charge multiple devices. Reports on portability are mixed, which matters for a unit listed at 340g, and charging speed receives both praise and criticism. Some customers say the bank holds its charge for weeks, while others report failure after around 200 days. These are reported experiences, not a guarantee of longevity or charging performance.
- Positive themes: Customers appreciate the practicality of the built-in cables and describe the power bank as handy for carrying and charging multiple devices.
- Negative themes: Some customers report that the unit broke after around 200 days.
- Mixed feedback: Charging speed is described positively by some customers, while others say recharging the power bank itself takes a while.
- Mixed feedback: Some customers find it convenient to carry, while others consider it too bulky for their intended use.
- Mixed feedback: Battery life feedback varies, including reports of holding charge for weeks and reports of earlier failure.

## Frequently asked questions

### How many devices can the Charmast C2065 charge at once?
The listing describes four built-in cables and four extra ports, and claims charging up to six devices at once. Its connection counts are inconsistent, so confirm the actual layout for the selected version.
### Can it charge a laptop?
No. The product information says it is not compatible with laptops and recommends a 30W-or-higher laptop charger instead.
### Can it charge headphones or a smartwatch?
The manufacturer says small devices such as headphones and watches can be charged by enabling low-current mode.
### What comes in the box?
The listed contents are one portable charger, one travel pouch and one user manual.

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## Add-ons

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## Images

![Charmast C2065 20,000mAh Power Bank, 22.5W — 1](https://bargainpostbox.co.uk/i/pHZY3urclRv5onYN6vSFQsTtE4zxSaQTgzBZpZTEBcmczfvPRGE9LOs9we2SEZ_zLEINTJHZhB9SFdbL099Pyr9r8BWalJnrLbsA-fgsFpQqLswSi5ZRiN4K.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 2](https://bargainpostbox.co.uk/i/3yZ2jnJQVXo9wt4Hp25eqEqQ7-JP-zdbJJs6fObOuGg04XaLE5XN6CYxItyhufyHGUutjWIXW7__MSpfQ6dwZcQxsIuigG9VuA5bHVARpx4ONoWgxJtlr3jV.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 3](https://bargainpostbox.co.uk/i/Le4assnoU_fuAsSYvQc_5F1ykHtZkYpcKa446zuKtckNPsDwooHV7Ur_5tJUjqT1J97wC2uWD290qWj1utSt6FxDvF5P1mJJOH7lNmvU7qSqIDy8SLxx9MaR.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 4](https://bargainpostbox.co.uk/i/OLDy2QGiw4UeYAgDvxqmovM-cjZ2zneAjuEo1PCCDEWIjX6SDBzv1FQYrJs5NlPL_IWL6PWe20IuNsWO2ZQuZx6gBQzuBXNSaTpduqPGbdJFMzs9sEVzl-he.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 5](https://bargainpostbox.co.uk/i/8hLGgbHcVPvTjzfac69qWXde_0s9L0Sd2210SsvnUTC1mBVMTaqpcIlynd8vHjJdADLKCoyxMx4Kj2uCpxl8APuZGCtYJ5fuuvBBGKvEO6Ypqun9PBN-8_zk.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 6](https://bargainpostbox.co.uk/i/hNPd7h-i_vEC9bd5LwtKl2weqUarl_MCIZN6v8KDewYI6UQ9BLAQfBKH0_pGJAIVvKdYoDJn-RWAAq5yCWqs0tiPMfe6DzsUbM2KfhswpCHif5UwyAt4JBzk.jpg)

![Charmast C2065 20,000mAh Power Bank, 22.5W — 7](https://bargainpostbox.co.uk/i/WcTP0AuFVgiF5jWjZ5Jfx8VlecMt6bYcwT-Vlk1ElJvxRxAA5EITTjHFIX0Z-btsm9MaJISPtAwg31vRHtPWLitJ0XR1Ed09BDmi13SA3Fy5wCXtmaDzATT2.jpg)