--- product_id: 210399439 title: "Charmast Power Bank, Ultra Slim 10400mAh Portable Charger Quick Charge | USB C Battery Pack 3 Outputs 2 Inputs, LED Display, Travel Essentials Powerbank compatible with iPhone 17/Samsung/Tablets" brand: "charmast" price: "¥3807" currency: JPY in_stock: true reviews_count: 10 category: "Charmast" url: https://www.desertcart.jp/products/210399439-charmast-power-bank-ultra-slim-10400mah-portable-charger-quick-charge store_origin: JP region: Japan --- # 15W USB-C Fast Charge Accurate LED Power Display 10400mAh High Capacity Charmast Power Bank, Ultra Slim 10400mAh Portable Charger Quick Charge | USB C Battery Pack 3 Outputs 2 Inputs, LED Display, Travel Essentials Powerbank compatible with iPhone 17/Samsung/Tablets **Brand:** charmast **Price:** ¥3807 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, stay ahead — never miss a moment! ## Quick Answers - **What is this?** Charmast Power Bank, Ultra Slim 10400mAh Portable Charger Quick Charge | USB C Battery Pack 3 Outputs 2 Inputs, LED Display, Travel Essentials Powerbank compatible with iPhone 17/Samsung/Tablets by charmast - **How much does it cost?** ¥3807 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/210399439-charmast-power-bank-ultra-slim-10400mah-portable-charger-quick-charge) ## 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 - • **Ultra Slim, Ultra Portable:** Sleek 228g design fits effortlessly in your bag or pocket—power on the go without bulk. - • **Power Up at Lightning Speed:** Smart E 3.0 tech delivers max 15W fast charging for your devices—no more waiting around. - • **Built for Safety and Longevity:** Multiple built-in protections guard against overcurrent and short circuits—charge confidently every time. - • **Know Your Power Status Instantly:** Advanced LED display shows battery percentage with 100% accuracy—never get caught off guard. - • **Charge Multiple Devices Simultaneously:** 3 output ports let you power up your phone, tablet, and earbuds all at once—stay connected everywhere. ## Overview The Charmast Power Bank packs a robust 10400mAh lithium polymer battery with 15W USB-C Quick Charge and Smart E 3.0 technology, enabling fast, efficient charging for up to three devices simultaneously. Its ultra-slim 228g design features an accurate LED power display and comprehensive safety protections, making it the perfect travel companion for busy professionals who demand reliable, on-the-go power. ## Description Free delivery and returns on eligible orders. Buy Charmast Power Bank, Ultra Slim 10400mAh Portable Charger Quick Charge | USB C Battery Pack 3 Outputs 2 Inputs, LED Display, Travel Essentials Powerbank compatible with iPhone 17/Samsung/Tablets at desertcart UK. Review: I recommend this to everyone - I've used this for years. It charges my phone twice from 0. It's strong! Thin and fits easily in my hand or bag. It doesn't look like a charger which is nice. I recently dropped this into a puddle, it was full of water, and after a couple days of drying it works as new. Absolutely great! Review: ) - loved it until i lost it. can charge to 100 about three times before you need to recharge it, it’s very quick too and easy to transport. ## Features - ⚡ 15W USB C Fast Charge】All three ports adopted the Smart E 3.0 charging technology, automatically identify your devices and deliver its maximum efficiency. Smart E and VoltageBoost combine to deliver the fastest possible charge. - ⚡ 10400mAh High Capacity: The power bank can charge your iPhone 11 2.3 times, iPhone 11 Pro 2.3 times, iPhone 11 Pro Max 2.1 times, Huawei P20 2.1 times, Nintendo Switch 1.7 times etc. Enough capacity for daily use and travelling etc. - ⚡ Accurate LED Power Display: Adopted built-in advanced smart digital display technology, power display accuracy is up to 100% which ensures you know the remaining power clearly and never missing recharging in time. - ⚡ 3 Outputs & 2 Inputs Port: This protable charge could charge 3 devices simultaneously with its 3 outputs.And it supports 2 types input ports, you can use any one those cables to get your power bank recharging ready on. - ⚡ Safety Protection: Built-in multiple protection system to protect the power bank against over current and short circuit. It'll automatically turn itself off when short circuit or overloading occurs, and will extend the service life of your phone. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0891SLQDH | | Antenna Location | Charge | | Battery Capacity | 10400 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Charge Time | 3.5 Hours | | Battery Weight | 74 Grams | | Battery capacity | 10400 Milliamp Hours | | Best Sellers Rank | 141 in Mobile Phone Portable Power Banks | | Brand | charmast | | Brand Name | charmast | | Colour | Black | | Compatible Devices | Google Pixcel 3XL/2XL/XL, Xiaomi 9/8, Huawei Mate30/Mate30 Pro/Mate20/Mate20 Pro,Huawei P30/P30 Pro/P20 Pro, Nintendo Switch/Kindle Fire and More, iPhone 11/iPhone 11 Pro/iPhone 11 Pro Max/iPhone X/iPhone XR/iPhone XS/iPhone XS Max/iPhone 8/iPhone 8 Plus/iPhone 7/ iPhone 7Plus/iPhone 6/iPhone 6S | | Compatible Phone Models | Huawei,Iphone | | Connector Type | USB Type C | | Connector type | USB Type C | | Country of Origin | China | | Customer Reviews | 4.4 out of 5 stars 2,794 Reviews | | Item Dimensions | 14.4 x 6.7 x 1.5 centimetres | | Item Dimensions L x W x Thickness | 14.4L x 6.7W x 1.5Th centimetres | | Item Weight | 228 Grams | | Manufacturer | Charmast | | Manufacturer Part Number | W1056P | | Model Number | W1056P | | Number of Batteries | 1 Lithium Polymer batteries required. (included) | | Number of Ports | 3 | | Other Special Features of the Product | 10400mAh High Capacity, 18W PD & QC 3.0 Quick Charge, 3 Outputs & 2 Inputs Port, Accurate LED Power Display, Safety Protection | | Power Source | Battery Powered,Corded Electric | | Product Warranty | 3-year warranty | | Reusability | Rechargeable | | Special feature | 10400mAh High Capacity, 18W PD & QC 3.0 Quick Charge, 3 Outputs & 2 Inputs Port, Accurate LED Power Display, Safety Protection Special feature 10400mAh High Capacity, 18W PD & QC 3.0 Quick Charge, 3 Outputs & 2 Inputs Port, Accurate LED Power Display, Safety Protection See more | | Unit Count | 1.0 count | | Voltage | 5 Volts | ## Product Details - **Battery capacity:** 10400 Milliamp Hours - **Brand:** charmast - **Colour:** Black - **Connector type:** USB Type C ## Images ![Charmast Power Bank, Ultra Slim 10400mAh Portable Charger Quick Charge | USB C Battery Pack 3 Outputs 2 Inputs, LED Display, Travel Essentials Powerbank compatible with iPhone 17/Samsung/Tablets - Image 1](https://m.media-amazon.com/images/I/51ZiekZOS+L.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: What is the weight of this power bank?** A: The weight of this power bank is 228g. Very light. **Q: How do I know when it finishes charging?** A: Dear friend, thanks for your question. The led digital display will show 100% when it is fully charged. **Q: Does this support Huawei fast charging?** A: Dear friend, thanks for your question. Yes, it supports. About input: Micro USB and USB C input are compatible with QC 3.0/Samsung AFC/MTK-PE 2.0/Huawei FCP quick charge protocols. Besides, USB C input is provided with PD 2.0/3.0 quick charge protocol. About output: USB C and USB 1/2 output are compatible with QC 3.0/Samsung AFC/MTK-PE 2.0/Huawei FCP and Spreadtrum SFCP quick charge protocols. It also supports BC1.2 protocol, Samsung and iPhone high current charge. Besides, USB C output is provided with PD 2.0/3.0 and PPS quick charge protocol. Hope it can help you. Sincerely, Lisa. **Q: Can this charge 3 devices at the same time?** A: Yes, it can charge 3 devices simultaneously. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I recommend this to everyone *by J***R on 14 August 2026* I've used this for years. It charges my phone twice from 0. It's strong! Thin and fits easily in my hand or bag. It doesn't look like a charger which is nice. I recently dropped this into a puddle, it was full of water, and after a couple days of drying it works as new. Absolutely great! ### ⭐⭐⭐⭐⭐ ) *by J***E on 25 August 2026* loved it until i lost it. can charge to 100 about three times before you need to recharge it, it’s very quick too and easy to transport. ### ⭐⭐⭐⭐ Lasted 3 years *by E***A on 18 August 2026* Lasted me three years before it gave up, so not bad at all for the price. Nice and thin so I can pop it in a bag - doesn’t take up much space and isn’t heavy at all. Purchased another one. Charges a phone maybe 1.5 times. Good for days out. ## Frequently Bought Together - Charmast Power Bank Quick Charge 10400mAh USB C Power Bank Ultra Slim Portable Charger LED Display Power Pack Compatible with Smartphone iPhone Huawei and More - Power Bank 20000mAh, PD3.0 QC4.0 22.5W Fast Charging PD20W USB C PowerBank Portable Charger With LCD Display 3 Outputs & 2 Inputs For Smartphones and Camping (black2) - Double Dragon EU Travel Plug Adapter | UK 3 PIN to European 2 PIN Plug Converter Type C, E, F for Spain, France, Italy, Portugal, Germany, Greece, Sweden, Norway, Poland, Denmark, Finland (Pack of 2) --- ## 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/210399439-charmast-power-bank-ultra-slim-10400mah-portable-charger-quick-charge](https://www.desertcart.jp/products/210399439-charmast-power-bank-ultra-slim-10400mah-portable-charger-quick-charge) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-08*