---
product_id: 578503924
title: "Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh"
brand: "charmast"
price: "¥11438"
currency: JPY
in_stock: true
category: "Charmast"
url: https://www.desertcart.jp/products/578503924-charmast-22-5w-fast-charging-power-bank-4-cables-portable
store_origin: JP
region: Japan
---

# 22.5W super-fast charging 20000mAh high-capacity battery 6 outputs + 4 built-in cables Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh

**Brand:** charmast
**Price:** ¥11438
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your hustle, anytime, anywhere!

## Quick Answers

- **What is this?** Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh by charmast
- **How much does it cost?** ¥11438 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/578503924-charmast-22-5w-fast-charging-power-bank-4-cables-portable)

## 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 LED Display:** Precision battery readout down to 1%—stay in control, always.
- • **Massive 20000mAh Capacity:** Power through days of travel or work without hunting for outlets.
- • **Lightning-Fast 22.5W Output:** Get 50% charge in just 30 minutes—never miss a beat between meetings.
- • **Sleek, Durable & Travel-Ready:** Slim profile with tangle-free built-in cables and protective pouch—charge in style anywhere.
- • **Charge 6 Devices Simultaneously:** Ultimate multi-gadget power solution for busy pros on the move.

## Overview

The Charmast 22.5W Fast Charging Power Bank is a premium 20000mAh portable charger featuring 4 built-in cables and 6 output ports, enabling simultaneous charging of multiple devices. With rapid 22.5W charging, a precise LED battery display, and a sleek, travel-friendly design, it’s engineered for professionals who demand reliable, on-the-go power for smartphones, tablets, and more.

## Description

Free delivery and returns on eligible orders. Buy Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh | USB C Battery Pack, 6 Outputs 4 Inputs Powerbank for Travel, Work, LED Display, Compatible with Smart Phones, Tablets at desertcart UK.

## 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, for iPhone, 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 for iPhone 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 |
| Amperage | 3 Amps |
| Battery Capacity | 20000 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 74 Grams |
| Best Sellers Rank | 17 in Mobile Phone Portable Power Banks |
| Brand Name | charmast |
| Colour | Black-20000mAh |
| Compatible Devices | Smartphone, Smartwatch, Tablet |
| Connector Type | 4 Built-in Cables:USB-C,for iPhone,Micro USB,USB-A, 4 Ports:USB-C*1+USB-A *2+Micro USB *1 |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,803) |
| Included Components | Portable Charger*1, Travel Pouch*1, User Manual*1 |
| Is Electric | Yes |
| Item Dimensions | 16 x 7.3 x 1.9 centimetres |
| Item Dimensions L x W x Thickness | 15.4L x 7.3W x 2.2Th centimetres |
| Item Weight | 340 Grams |
| Manufacturer | Dong guan Utopia-Originality Technology Co., Ltd |
| Manufacturer Part Number | C2065 |
| Maximum Output Power | 22.5W |
| Model Number | C2065 |
| Number of Batteries | 2 Lithium Polymer batteries required. (included) |
| Number of Items | 1 |
| Number of Ports | 6 |
| Other Special Features of the Product | Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection |
| Portable | Yes |
| Power Source | Corded Electric |
| Product Warranty | 3-year warranty |
| Reusability | Rechargeable |
| Unit Count | 1.0 count |
| Voltage | 5 Volts |

## Product Details

- **Battery capacity:** 20000 Milliamp Hours
- **Brand:** charmast
- **Colour:** Black-20000mAh
- **Connector type:** 4 Built-in Cables:USB-C,for iPhone,Micro USB,USB-A, 4 Ports:USB-C*1+USB-A *2+Micro USB *1
- **Special feature:** Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection

## Images

![Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 1](https://m.media-amazon.com/images/I/71RoSfN6M3L.jpg)
![Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 2](https://m.media-amazon.com/images/I/91Weq9aKyFL.jpg)
![Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 3](https://m.media-amazon.com/images/I/81hivLFonCL.jpg)
![Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 4](https://m.media-amazon.com/images/I/712Zhu3BL1L.jpg)
![Charmast 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 5](https://m.media-amazon.com/images/I/81q0A23jENL.jpg)

## Available Options

This product comes in different **Color** options.

## 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.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/578503924-charmast-22-5w-fast-charging-power-bank-4-cables-portable](https://www.desertcart.jp/products/578503924-charmast-22-5w-fast-charging-power-bank-4-cables-portable)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-17*