--- product_id: 578503924 title: "22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh" brand: "charmast" price: "¥9398" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/578503924-22-5w-fast-charging-power-bank-4-cables-portable-charger store_origin: JP region: Japan --- # 22.5W super-fast charging 20000mAh high-capacity battery 4 built-in cables + 4 ports, 6 devices at once 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh **Brand:** charmast **Price:** ¥9398 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your hustle, anytime, anywhere! ## Quick Answers - **What is this?** 22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh by charmast - **How much does it cost?** ¥9398 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/578503924-22-5w-fast-charging-power-bank-4-cables-portable-charger) ## 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:** Know your exact power level down to 1%—no more surprises, just seamless planning. - • **Massive 20000mAh Capacity:** Power through days with up to 4 full iPhone 15 charges—never ration your battery life again. - • **Lightning-Fast 22.5W Output:** Get 50% charge in just 30 minutes—perfect for busy pros on the go. - • **Sleek, Durable & Travel-Ready:** Slim, pocket-friendly design with tangle-free cables and a protective pouch—charge in style anywhere. - • **Charge 6 Devices Simultaneously:** Ultimate all-in-one power solution with 4 built-in cables and 4 extra ports—ditch cable clutter forever. ## Overview The Charmast 22.5W Fast Charging Power Bank features a massive 20000mAh lithium polymer battery with 4 built-in cables and 4 additional ports, enabling simultaneous charging of up to 6 devices. It delivers rapid 22.5W output for quick top-ups, supports precise battery monitoring via a smart LED display, and is designed for portability with a slim profile and travel pouch. Ideal for professionals and travelers, it combines convenience, speed, and reliability in one sleek package. ## Description Why your power bank seems to drain quickly than expected? 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. Can this power bank be taken on airplanes? Carry-on allowed. Do not pack in checked baggage. Does it work with small devices? Yes. Enable low-current mode for headphones, watches, etc. Is it normal for the portable charger and phone to get warm while charging? Yes. Some warmth is normal during charging and use due to energy conversion. If temperatures exceed 45°C (113°F), stop use immediately. Is it compatible with laptops? No. Use a 30W+ laptop charger instead. 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In 22.5W with 6 Out & 4 In Founded in 2017, Charmast blends reliability with refined design, trusted by 38M+ users worldwide. Built on trust and driven by beauty, we turn powerful tech into an intuitive, elevated everyday experience. ## 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 | |---------------|-------| | Amperage | 3 Amps | | Asin | B0CJBQBB7F | | Battery Capacity | 20000 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Weight | 74 Grams | | Best Sellers Rank | 18 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 (4,847) 4.4 out of 5 stars | | 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 ![22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh - Image 1](https://m.media-amazon.com/images/I/71RoSfN6M3L.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality charger you won’t be disappointed *by on Reviewed in the United Kingdom 27 July 2026* This solved my charging issues .was initially surprised it didn’t come with a charger but the wires are attached and the usb wire is for input .I have only had it a few days but it charges my phone quickly and uses a small percentage of the power displayed .I just love how the different wires are integrated so can’t get lost and are always to hand .seems good quality recharges quickly and has a little bag so easy to carry around ### ⭐⭐⭐⭐⭐ It’s very handy and comes every with me so I never run out *by on Reviewed in the United Kingdom 12 August 2026* Excellent I couldn’t be with out it ### ⭐⭐⭐⭐⭐ The best phone / device charger! *by on Reviewed in the United Kingdom 15 August 2026* Right I just have to say! This is the best purchase of the year since my IPhone 16 battery life is diminishing.My daughter keeps stealing so I am going have to purchase another.Great value for money. Slim design that I can fit both phone and charger in my pocket at once!Super powerful as it charges my phone in no time! Has a helpful display to allow you to see how much charge is left in the power pack and also how much it has charged the device! ## 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/578503924-22-5w-fast-charging-power-bank-4-cables-portable-charger](https://www.desertcart.jp/products/578503924-22-5w-fast-charging-power-bank-4-cables-portable-charger) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-01*