---
product_id: 578503924
title: "Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency"
brand: "charmast"
price: "2225531₫"
currency: VND
in_stock: true
reviews_count: 12
category: "Charmast"
url: https://www.desertcart.vn/products/578503924-charmast-20000mah-power-bank-with-4-built-in-cables-22
store_origin: VN
region: Vietnam
---

# 22.5W ultra-fast charging 20000mAh powerhouse 4 built-in cables + 4 ports Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency

**Brand:** charmast
**Price:** 2225531₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your hustle—stay charged, stay unstoppable!

## Quick Answers

- **What is this?** Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency by charmast
- **How much does it cost?** 2225531₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/578503924-charmast-20000mah-power-bank-with-4-built-in-cables-22)

## Best For

- charmast enthusiasts

## Why This Product

- Trusted charmast brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Digital Display:** Precise battery % readout so you’re always in control
- • **22.5W Fast Charging Power:** Get 50% battery in just 30 minutes—never miss a beat
- • **Massive 20000mAh Capacity:** Up to 4 full iPhone 15 charges—power that lasts for days
- • **Sleek, Travel-Ready Design:** Slim, durable, and cable-free convenience with included pouch
- • **Charge 6 Devices Simultaneously:** Ultimate multi-gadget solution for busy pros on the move

## Overview

The Charmast 20000mAh Power Bank is a travel-friendly, high-capacity charger featuring 4 built-in cables and 4 extra ports to power up to 6 devices at once. With 22.5W fast charging and a smart digital display, it delivers quick, reliable power for iPhone, Android, and iPad users. Designed for professionals on the go, it combines convenience, durability, and advanced safety features in a sleek, pocketable form factor.

## Description

Free delivery and returns on eligible orders. Buy Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency at desertcart UK.

Review: One of My Favourites! - This is one of my favourite power banks. I love that all the cables are attached, so I don’t need to worry about fiddling around or carrying extra cords, it’s super convenient and hassle-free. It’s really powerful, and once fully charged it lasts a long time, easily getting me through multiple charges. It’s a bit on the bulky side, but honestly I don’t mind because the performance and convenience more than make up for it. Overall, a great power bank that I’d happily recommend.
Review: Great charger, don't hesitate if you need one. - This portable battery is an ideal size: it's about as large a capacity as you can take on to an aeroplane, but physically is a nice size and a shape that would slip into a pocket or bag very nicely. It has a reassuring (but not back breaking) weight, it feels solid and well constructed. The Charmast displays battery charge as a percentage which is much better than the 3-4 little winking lights many other batteries have. The display is located under the surface of the battery case, which is cool. It also has a little green symbol which lights up when quick charge is engaged. The battery uses USB-C for fast charging up. It has two charging USB-A outputs and one quicker charge USB-A socket (colour coded for easy of recognition). You can also quick charge a device via the USB-C socket. This means you can a total of four devices on charge at once! If you charge multiple items you lose the ability to quick charge, but this is a reasonable tradeoff for being able to charge four devices at once (I'm doing this now with a phone, a tablet, a digital camera and a pair of headphones, and it's working flawlessly). There are safety circuits to prevent overheating (the battery did not appear to warm up noticeably while working) and also turns off charging when you devices are full. Battery life seems to be about right for the stated capacity, but I will wait to see how it beds in over repeated cycles. All in all this a a fabulous piece of kit for a very reasonable price, especially when its on offer via desertcart. Recommended!

## Features

- 【All-in-One Power Bank: 4 Built-in Cables + 4 Ports】Stop carrying loose cables! This power bank has 4 fixed cables (USB-C, Lightning, Micro-USB, USB A) and 4 extra ports (USB-C, Micro USB , 2x USB-A) to charge up to 6 devices at once. It’s the ultimate cable-free solution for families, travel buddies, or anyone with multiple gadgets. The built-in USB-A cable even recharges the power bank itself—just plug it into a wall adapter.
- 【22.5W Super-Fast Charging: Power Up in Minutes】 Get back to 50% battery in about 30 minutes for most modern phones. The built-in USB-C and Lightning cables support 20W PD/QC fast charging, while the USB-A port delivers up to 22.5W for compatible Android devices. Perfect for quick top-ups between meetings, during layovers, or in any time-sensitive situation.
- 【20000mAh Travel-Ready Power: Lasts for Days】With enough capacity to fully charge an iPhone 15 up to 4 times, this power bank is your all-day power companion. It’s friendly for air travel and reliable for camping, long commutes, or power outages. Never ration your battery life again.
- 【Smart Digital Display: Always Know Your Exact Battery Life】Plan your day with confidence. The precise LED screen shows remaining power down to 1%, so you’ll never be caught off guard by a dead power bank. It’s smarter and more accurate than traditional 4-dot indicators.
- 【Designed for Real Life: Slim, Durable & Ultra-Convenient】We designed it for the real world: The sleek, pocket-friendly profile fits easily in bags; the built-in cables are sturdy and tangle-free; and the included travel pouch adds extra protection. Everything you need is in one box—power bank, manual, and pouch—ready to simplify your charging chaos.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJBQBB7F |
| Batteries | 2 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | 474 in Climate Pledge Friendly ( See Top 100 in Climate Pledge Friendly ) 11 in Mobile Phone Portable Power Banks 474 in Climate Pledge Friendly: Shop All |
| Colour | Black-20000mAh |
| Customer Reviews | 4.5 4.5 out of 5 stars (7,131) |
| Date First Available | 19 Sept. 2023 |
| Item Weight | 340 g |
| Item model number | C2065 |
| Product Dimensions | 16 x 7.24 x 1.91 cm; 340 g |
| Special features | Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection |

## Product Details

- **Battery capacity:** 20000 Milliamp Hours
- **Brand:** charmast
- **Colour:** Black-20000mAh
- **Connector type:** Micro USB
- **Special feature:** Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection

## Images

![Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency - Image 1](https://m.media-amazon.com/images/I/71tsTZoDenL.jpg)

## Questions & Answers

**Q: Why your power bank seems to drain quickly than expected?**
A: Power banks lose energy during charging due to heat and voltage conversion, typically supplying 60%-70% of their power to other devices. Therefore, a fully charged Charmast 20,000mAh power bank can deliver about 12,000-14,000mAh to your devices.

**Q: Can this power bank be taken on airplanes?**
A: Carry-on allowed. Do not pack in checked baggage.

**Q: Does it work with small devices?**
A: Yes. Enable low-current mode for headphones, watches, etc.

**Q: Is it normal for the portable charger and phone to get warm while charging?**
A: Yes. Some warmth is normal during charging and use due to energy conversion. If temperatures exceed 45°C (113°F), stop use immediately.

**Q: Is it compatible with laptops?**
A: No. Use a 30W+ laptop charger instead.

## Customer Reviews

### ⭐⭐⭐⭐⭐ One of My Favourites!
*by Z***A on 16 January 2026*

This is one of my favourite power banks. I love that all the cables are attached, so I don’t need to worry about fiddling around or carrying extra cords, it’s super convenient and hassle-free. It’s really powerful, and once fully charged it lasts a long time, easily getting me through multiple charges. It’s a bit on the bulky side, but honestly I don’t mind because the performance and convenience more than make up for it. Overall, a great power bank that I’d happily recommend.

### ⭐⭐⭐⭐⭐ Great charger, don't hesitate if you need one.
*by D***Y on 16 April 2024*

This portable battery is an ideal size: it's about as large a capacity as you can take on to an aeroplane, but physically is a nice size and a shape that would slip into a pocket or bag very nicely. It has a reassuring (but not back breaking) weight, it feels solid and well constructed. The Charmast displays battery charge as a percentage which is much better than the 3-4 little winking lights many other batteries have. The display is located under the surface of the battery case, which is cool. It also has a little green symbol which lights up when quick charge is engaged. The battery uses USB-C for fast charging up. It has two charging USB-A outputs and one quicker charge USB-A socket (colour coded for easy of recognition). You can also quick charge a device via the USB-C socket. This means you can a total of four devices on charge at once! If you charge multiple items you lose the ability to quick charge, but this is a reasonable tradeoff for being able to charge four devices at once (I'm doing this now with a phone, a tablet, a digital camera and a pair of headphones, and it's working flawlessly). There are safety circuits to prevent overheating (the battery did not appear to warm up noticeably while working) and also turns off charging when you devices are full. Battery life seems to be about right for the stated capacity, but I will wait to see how it beds in over repeated cycles. All in all this a a fabulous piece of kit for a very reasonable price, especially when its on offer via Amazon. Recommended!

### ⭐⭐⭐⭐⭐ Brilliant device
*by A***N on 1 November 2025*

This is a truly brilliant device. I bought the higher capacity one and am so pleased I did. It’s a manageable weight and seems to last forever! No loss of charge if not used and will fill an iPhone several times over - useful if you are taking loads of photos and using the battery up more quickly than usual. It’s incredibly quick to charge and the convenience of not needing separate leads is huge (it’s yet to be seen how well the built in leads last). I can walk around using my phone as it charges if needs be. Or sit over a coffee while it slurps up the juice for its battery. My daughter snaffled mine when visiting her far away so on return home I immediately bought myself another. I wouldn’t go anywhere without it now.

## Frequently Bought Together

- Charmast Power Bank 20000mAh, 20W Fast Charging Portable Charger with Built-in Cables, USB C Battery Pack, Slim Portable Phone Charger Backup Battery for iPhone, Samsung, iPad, More Phones, Tablets
- Portable Charger with Built in Cables, Portable Charger with Cords Wires Slim 10000mAh Travel Battery Pack 6 Outputs 3 Inputs 3A Fast Charging Power Bank for Samsung Google Pixel LG Moto iPhone iPad

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-28*